deps: patch V8 to 7.9.317.23

Refs: v8/v8@7.9.317.20...7.9.317.23

PR-URL: #30560
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>

deps/v8/include/v8-version.h

@@ -11,7 +11,7 @@
 #define V8_MAJOR_VERSION 7
 #define V8_MINOR_VERSION 9
 #define V8_BUILD_NUMBER 317
-#define V8_PATCH_LEVEL 22
+#define V8_PATCH_LEVEL 23
 
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)

deps/v8/src/objects/backing-store.cc

@@ -605,8 +605,14 @@ std::shared_ptr<BackingStore> GlobalBackingStoreRegistry::Lookup(
     return std::shared_ptr<BackingStore>();
   }
   auto backing_store = result->second.lock();
-  DCHECK_EQ(buffer_start, backing_store->buffer_start());
-  DCHECK_EQ(length, backing_store->byte_length());
+  CHECK_EQ(buffer_start, backing_store->buffer_start());
+  if (backing_store->is_wasm_memory()) {
+    // Grow calls to shared WebAssembly threads can be triggered from different
+    // workers, length equality cannot be guaranteed here.
+    CHECK_LE(length, backing_store->byte_length());
+  } else {
+    CHECK_EQ(length, backing_store->byte_length());
+  }
   return backing_store;
 }