Run Bazel test suite on Linux ARM64 platform

[8.1.0] Fix a bug which makes WorkerPool create too many workers and go above the limitation. (#25240)

Failed in 1m 1s
:ubuntu: Ubuntu 20.04 LTS ARM64curl -sS https://raw.githubusercontent.com/bazelbuild/continuous-integration/master/buildkite/bazelci.py?1739202196 -o bazelci.py && python3.8 bazelci.py runner --task=ubuntu2004_arm64 --http_config=https://raw.githubusercontent.com/bazelbuild/continuous-integration/master/pipelines/bazel-linux-arm64.yml?1739202196
Waited 7s
·
Ran in 18s
Total Job Run Time: 54s