Revert "Disable FIrestore integration test in Dataflow PostCommits"

[Abacn]

Reverts #26060

Fixes #25851

Fix from gcp should be rolled out

[Abacn]

Run Java PostCommit

[Abacn]

Run PostCommit_Java_Dataflow

[Abacn]

Java PostCommit failing runrelated.

It start failing on May 4, 5 PM GMT, but then at May 5, 5 PM GMT there is a successful run, then permared since then. No obvious code change at that time. Is it some breaking change at gcp side?

[Abacn]

Now most disabled tests passed again

Class	Duration	Fail	(diff)	Skip	(diff)	Pass	(diff)	Total	(diff)
FirestoreV1IT	46 min	1	+1	0		6	+6	7	+7

but there is still one test failing the same reason as it was before:

java.lang.RuntimeException: com.google.api.gax.rpc.InvalidArgumentException: io.grpc.StatusRuntimeException: INVALID_ARGUMENT: Invalid request routing header collection_id=a&parent=projects/apache-beam-testing/databases/firestoredb/documents/beam/IT/2023-05-08T14:24:05.343/FirestoreV1IT/test/listDocuments. Please fill in the request header with format x-goog-request-params:project_id=apache-beam-testing&database_id=firestoredb
	at com.google.api.gax.rpc.ApiExceptionFactory.createException(ApiExceptionFactory.java:92)

See https://ci-beam.apache.org/job/beam_PostCommit_Java_DataflowV1_PR/174/testReport/junit/org.apache.beam.sdk.io.gcp.firestore.it/FirestoreV1IT/listDocuments/ for full traceback.

[Abacn]

Run PostCommit_Java_Dataflow

[Abacn]

Run Java PostCommit

[Abacn]

Run Java_Examples_Dataflow_Java11 PreCommit

[Abacn]

Run PostCommit_Java_Dataflow

[Abacn]

Reopen