[SPARK-44982][CONNECT] Mark Spark Connect server configurations as st…

…atic

### What changes were proposed in this pull request?

This PR proposes to mark all Spark Connect server configurations as static configurations.

### Why are the changes needed?

They are already static configurations, and cannot be set in runtime configuration (by default), see also https://github.com/apache/spark/blob/4a4856207d414ba88a8edabeb70e20765460ef1a/sql/core/src/main/scala/org/apache/spark/sql/RuntimeConfig.scala#L164-L167

### Does this PR introduce _any_ user-facing change?

No, they are already static configurations.

### How was this patch tested?

Existing unittests.

### Was this patch authored or co-authored using generative AI tooling?

No.

Closes apache#42695 from HyukjinKwon/SPARK-44982.

Authored-by: Hyukjin Kwon <gurwls223@apache.org>
Signed-off-by: Hyukjin Kwon <gurwls223@apache.org>

connector/connect/server/src/main/scala/org/apache/spark/sql/connect/config/Connect.scala

@@ -18,27 +18,26 @@ package org.apache.spark.sql.connect.config
 
 import java.util.concurrent.TimeUnit
 
-import org.apache.spark.internal.config.ConfigBuilder
 import org.apache.spark.network.util.ByteUnit
 import org.apache.spark.sql.connect.common.config.ConnectCommon
 
 object Connect {
   import org.apache.spark.sql.internal.SQLConf.buildStaticConf
 
   val CONNECT_GRPC_BINDING_ADDRESS =
-    ConfigBuilder("spark.connect.grpc.binding.address")
+    buildStaticConf("spark.connect.grpc.binding.address")
       .version("4.0.0")
       .stringConf
       .createOptional
 
   val CONNECT_GRPC_BINDING_PORT =
-    ConfigBuilder("spark.connect.grpc.binding.port")
+    buildStaticConf("spark.connect.grpc.binding.port")
       .version("3.4.0")
       .intConf
       .createWithDefault(ConnectCommon.CONNECT_GRPC_BINDING_PORT)
 
   val CONNECT_GRPC_INTERCEPTOR_CLASSES =
-    ConfigBuilder("spark.connect.grpc.interceptor.classes")
+    buildStaticConf("spark.connect.grpc.interceptor.classes")
       .doc(
         "Comma separated list of class names that must " +
           "implement the io.grpc.ServerInterceptor interface.")
@@ -47,7 +46,7 @@ object Connect {
       .createOptional
 
   val CONNECT_GRPC_ARROW_MAX_BATCH_SIZE =
-    ConfigBuilder("spark.connect.grpc.arrow.maxBatchSize")
+    buildStaticConf("spark.connect.grpc.arrow.maxBatchSize")
       .doc(
         "When using Apache Arrow, limit the maximum size of one arrow batch, in bytes unless " +
           "otherwise specified, that can be sent from server side to client side. Currently, we " +
@@ -57,15 +56,15 @@ object Connect {
       .createWithDefault(4 * 1024 * 1024)
 
   val CONNECT_GRPC_MAX_INBOUND_MESSAGE_SIZE =
-    ConfigBuilder("spark.connect.grpc.maxInboundMessageSize")
+    buildStaticConf("spark.connect.grpc.maxInboundMessageSize")
       .doc("Sets the maximum inbound message in bytes size for the gRPC requests." +
         "Requests with a larger payload will fail.")
       .version("3.4.0")
       .bytesConf(ByteUnit.BYTE)
       .createWithDefault(ConnectCommon.CONNECT_GRPC_MAX_MESSAGE_SIZE)
 
   val CONNECT_GRPC_MARSHALLER_RECURSION_LIMIT =
-    ConfigBuilder("spark.connect.grpc.marshallerRecursionLimit")
+    buildStaticConf("spark.connect.grpc.marshallerRecursionLimit")
       .internal()
       .doc("""
           |Sets the recursion limit to grpc protobuf messages.
@@ -75,31 +74,31 @@ object Connect {
       .createWithDefault(1024)
 
   val CONNECT_EXECUTE_MANAGER_DETACHED_TIMEOUT =
-    ConfigBuilder("spark.connect.execute.manager.detachedTimeout")
+    buildStaticConf("spark.connect.execute.manager.detachedTimeout")
       .internal()
       .doc("Timeout after which executions without an attached RPC will be removed.")
       .version("3.5.0")
       .timeConf(TimeUnit.MILLISECONDS)
       .createWithDefaultString("5m")
 
   val CONNECT_EXECUTE_MANAGER_MAINTENANCE_INTERVAL =
-    ConfigBuilder("spark.connect.execute.manager.maintenanceInterval")
+    buildStaticConf("spark.connect.execute.manager.maintenanceInterval")
       .internal()
       .doc("Interval at which execution manager will search for abandoned executions to remove.")
       .version("3.5.0")
       .timeConf(TimeUnit.MILLISECONDS)
       .createWithDefaultString("30s")
 
   val CONNECT_EXECUTE_MANAGER_ABANDONED_TOMBSTONES_SIZE =
-    ConfigBuilder("spark.connect.execute.manager.abandonedTombstonesSize")
+    buildStaticConf("spark.connect.execute.manager.abandonedTombstonesSize")
       .internal()
       .doc("Maximum size of the cache of abandoned executions.")
       .version("3.5.0")
       .intConf
       .createWithDefaultString("10000")
 
   val CONNECT_EXECUTE_REATTACHABLE_ENABLED =
-    ConfigBuilder("spark.connect.execute.reattachable.enabled")
+    buildStaticConf("spark.connect.execute.reattachable.enabled")
       .internal()
       .doc("Enables reattachable execution on the server. If disabled and a client requests it, " +
         "non-reattachable execution will follow and should run until query completion. This will " +
@@ -110,7 +109,7 @@ object Connect {
       .createWithDefault(true)
 
   val CONNECT_EXECUTE_REATTACHABLE_SENDER_MAX_STREAM_DURATION =
-    ConfigBuilder("spark.connect.execute.reattachable.senderMaxStreamDuration")
+    buildStaticConf("spark.connect.execute.reattachable.senderMaxStreamDuration")
       .internal()
       .doc("For reattachable execution, after this amount of time the response stream will be " +
         "automatically completed and client needs to send a new ReattachExecute RPC to continue. " +
@@ -120,7 +119,7 @@ object Connect {
       .createWithDefaultString("2m")
 
   val CONNECT_EXECUTE_REATTACHABLE_SENDER_MAX_STREAM_SIZE =
-    ConfigBuilder("spark.connect.execute.reattachable.senderMaxStreamSize")
+    buildStaticConf("spark.connect.execute.reattachable.senderMaxStreamSize")
       .internal()
       .doc(
         "For reattachable execution, after total responses size exceeds this value, the " +
@@ -131,7 +130,7 @@ object Connect {
       .createWithDefaultString("1g")
 
   val CONNECT_EXECUTE_REATTACHABLE_OBSERVER_RETRY_BUFFER_SIZE =
-    ConfigBuilder("spark.connect.execute.reattachable.observerRetryBufferSize")
+    buildStaticConf("spark.connect.execute.reattachable.observerRetryBufferSize")
       .internal()
       .doc(
         "For reattachable execution, the total size of responses that were already sent to be " +
@@ -143,7 +142,7 @@ object Connect {
       .createWithDefaultString("1m")
 
   val CONNECT_EXTENSIONS_RELATION_CLASSES =
-    ConfigBuilder("spark.connect.extensions.relation.classes")
+    buildStaticConf("spark.connect.extensions.relation.classes")
       .doc("""
           |Comma separated list of classes that implement the trait
           |org.apache.spark.sql.connect.plugin.RelationPlugin to support custom
@@ -155,7 +154,7 @@ object Connect {
       .createWithDefault(Nil)
 
   val CONNECT_EXTENSIONS_EXPRESSION_CLASSES =
-    ConfigBuilder("spark.connect.extensions.expression.classes")
+    buildStaticConf("spark.connect.extensions.expression.classes")
       .doc("""
           |Comma separated list of classes that implement the trait
           |org.apache.spark.sql.connect.plugin.ExpressionPlugin to support custom
@@ -167,7 +166,7 @@ object Connect {
       .createWithDefault(Nil)
 
   val CONNECT_EXTENSIONS_COMMAND_CLASSES =
-    ConfigBuilder("spark.connect.extensions.command.classes")
+    buildStaticConf("spark.connect.extensions.command.classes")
       .doc("""
              |Comma separated list of classes that implement the trait
              |org.apache.spark.sql.connect.plugin.CommandPlugin to support custom
@@ -179,7 +178,7 @@ object Connect {
       .createWithDefault(Nil)
 
   val CONNECT_JVM_STACK_TRACE_MAX_SIZE =
-    ConfigBuilder("spark.connect.jvmStacktrace.maxSize")
+    buildStaticConf("spark.connect.jvmStacktrace.maxSize")
       .doc("""
           |Sets the maximum stack trace size to display when
           |`spark.sql.pyspark.jvmStacktrace.enabled` is true.
@@ -203,13 +202,13 @@ object Connect {
       .createWithDefault(false)
 
   val CONNECT_UI_STATEMENT_LIMIT =
-    ConfigBuilder("spark.sql.connect.ui.retainedStatements")
+    buildStaticConf("spark.sql.connect.ui.retainedStatements")
       .doc("The number of statements kept in the Spark Connect UI history.")
       .version("3.5.0")
       .intConf
       .createWithDefault(200)
 
-  val CONNECT_UI_SESSION_LIMIT = ConfigBuilder("spark.sql.connect.ui.retainedSessions")
+  val CONNECT_UI_SESSION_LIMIT = buildStaticConf("spark.sql.connect.ui.retainedSessions")
     .doc("The number of client sessions kept in the Spark Connect UI history.")
     .version("3.5.0")
     .intConf