Fix issue with google.golang.org/protobuf v1.36.X+

When we upgrade our bazel codegen to this new version we get a strange compile error from our gapic targets. Running `bazelisk build --sandbox_debug //google/bigtable/admin/v2:admin_go_gapic` generates lots of error like: `cannot use name (type string) as type int32 in field value`. This happens for all LROs. For now we are manually patching in an old version but this should be removed ASAP once we have identified the defect.

Start by reproducing the failure with `bazelisk build --sandbox_debug //google/bigtable/admin/v2:admin_go_gapic` using google.golang.org/protobuf v1.36.X, then compare the generated LRO targets with the older version currently used as a workaround. Trace the generated fields involved in the `string` versus `int32` errors. Done means the targets build without manual patching on the new protobuf version.

Written by the indexing model from the issue text.