[chore][processor/remotetap] Fix flaky tests (#32970)

I added more information on the issue, but it seems like the limiter
being used is especially flaky with timing in tests, so if too many
metrics/traces/logs are being sent, the limit won't get fully hit as
expected, meaning data will count as two separate intervals in the test
(thus not being limited properly). This is flakiness in testing, not the
rate limiter's fault, from what I can tell.

Also, in `assert.Equal`, the expected value should be first, and the
actual value should be second. I've swapped these as the original output
of the test failure was causing me confusion.

Resolves #32967

processor/remotetapprocessor/processor_test.go

@@ -27,7 +27,7 @@ func TestConsumeMetrics(t *testing.T) {
 		{name: "limit_0", limit: 0},
 		{name: "limit_1", limit: 1},
 		{name: "limit_10", limit: 10},
-		{name: "limit_50", limit: 50},
+		{name: "limit_30", limit: 30},
 	}
 
 	for _, c := range cases {
@@ -59,7 +59,7 @@ func TestConsumeMetrics(t *testing.T) {
 
 			processor.cs.closeAndRemove(idx)
 			wg.Wait()
-			assert.Equal(t, receiveNum, c.limit)
+			assert.Equal(t, c.limit, receiveNum)
 
 		})
 	}
@@ -76,7 +76,7 @@ func TestConsumeLogs(t *testing.T) {
 		{name: "limit_0", limit: 0},
 		{name: "limit_1", limit: 1},
 		{name: "limit_10", limit: 10},
-		{name: "limit_50", limit: 50},
+		{name: "limit_30", limit: 30},
 	}
 
 	for _, c := range cases {
@@ -109,7 +109,7 @@ func TestConsumeLogs(t *testing.T) {
 			processor.cs.closeAndRemove(idx)
 			wg.Wait()
 			t.Log(receiveNum)
-			assert.Equal(t, receiveNum, c.limit)
+			assert.Equal(t, c.limit, receiveNum)
 		})
 	}
 }
@@ -125,7 +125,7 @@ func TestConsumeTraces(t *testing.T) {
 		{name: "limit_0", limit: 0},
 		{name: "limit_1", limit: 1},
 		{name: "limit_10", limit: 10},
-		{name: "limit_50", limit: 50},
+		{name: "limit_30", limit: 30},
 	}
 
 	for _, c := range cases {
@@ -157,7 +157,7 @@ func TestConsumeTraces(t *testing.T) {
 
 			processor.cs.closeAndRemove(idx)
 			wg.Wait()
-			assert.Equal(t, receiveNum, c.limit)
+			assert.Equal(t, c.limit, receiveNum)
 		})
 	}
 }