[sdk-platform-java] Version.java is not generated when adding a new version of API to existing libraries

[blakeli0]

New library generation PR failed with the following error

2026-05-30T04:10:39.9700322Z 04:10:39:902 [ERROR] /home/runner/work/google-cloud-java/google-cloud-java/java-geminidataanalytics/google-cloud-geminidataanalytics/src/main/java/com/google/cloud/geminidataanalytics/v1/stub/DataAgentServiceStubSettings.java:[588,21] cannot find symbol
2026-05-30T04:10:39.9700527Z 04:10:39:902 [ERROR]   symbol:   variable Version
2026-05-30T04:10:39.9700874Z 04:10:39:902 [ERROR]   location: class com.google.cloud.geminidataanalytics.v1.stub.DataAgentServiceStubSettings

It seems Version.java file is not generated when adding a new version of API to existing libraries

[blakeli0]

cc: @zhumin8 we may have to change the hermetic build scripts.