[Failing Test]: TestAutomatedExpansionService in Go SDK is flaky on precommits

### What happened?

Flaky test in GO SDK

=== RUN TestAutomatedExpansionService
expansion_test.go:47: failed to start expansion service JAR, got context deadline exceeded
--- FAIL: TestAutomatedExpansionService (15.01s)

Links:
1. https://ci-beam.apache.org/job/beam_PreCommit_Go_Commit/13386/console
2. https://ci-beam.apache.org/job/beam_PreCommit_GoPortable_Commit/4771/

### Issue Failure

Failure: Test is flaky

### Issue Priority

Priority: 2 (backlog / disabled test but we think the product is healthy)

### Issue Components

- [ ] Component: Python SDK
- [ ] Component: Java SDK
- [X] Component: Go SDK
- [ ] Component: Typescript SDK
- [ ] Component: IO connector
- [ ] Component: Beam examples
- [ ] Component: Beam playground
- [ ] Component: Beam katas
- [ ] Component: Website
- [ ] Component: Spark Runner
- [ ] Component: Flink Runner
- [ ] Component: Samza Runner
- [ ] Component: Twister2 Runner
- [ ] Component: Hazelcast Jet Runner
- [ ] Component: Google Cloud Dataflow Runner

Start with expansion_test.go at line 47 and reproduce TestAutomatedExpansionService using the linked Go precommit job logs. Investigate why the expansion service JAR exceeds the 15-second startup deadline; done means the test starts reliably and the Go precommit tests pass without flaking.

Written by the indexing model from the issue text.