[9.3.0] remote: add gRPC download idle timeout

[bazel-io]

Forked from #29916

[bazel-io]

Cherry-pick was attempted but there were merge conflicts in the following file(s). Please resolve manually.

src/main/java/com/google/devtools/build/lib/remote/BUILD
src/main/java/com/google/devtools/build/lib/remote/RemoteModule.java
src/test/java/com/google/devtools/build/lib/remote/BUILD
src/test/java/com/google/devtools/build/lib/remote/GrpcCacheClientTest.java

cc: @bazelbuild/triage

[iancha1992]

Cherry-pick was attempted but there were merge conflicts in the following file(s). Please resolve manually.

src/main/java/com/google/devtools/build/lib/remote/BUILD src/main/java/com/google/devtools/build/lib/remote/RemoteModule.java src/test/java/com/google/devtools/build/lib/remote/BUILD src/test/java/com/google/devtools/build/lib/remote/GrpcCacheClientTest.java

cc: @bazelbuild/triage

cc: @sluongng

[iancha1992]

Cherry-picked in #30667