Slowest 20 targets

//src/test/shell/bazel:bazel_bootstrap_distfile_test on macOS (shard 1): PASSED in 2194.7s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_test on Ubuntu 20.04 LTS: PASSED in 1060.4s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_test on Ubuntu 22.04 LTS: PASSED in 1037.6s (log)
//src/test/shell/bazel:bazel_determinism_test on Ubuntu 20.04 LTS: PASSED in 996.8s (log)
//src/test/shell/bazel:bazel_determinism_test on Ubuntu 22.04 LTS: PASSED in 958.1s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_tar_test on CentOS 7: PASSED in 956.6s (log)
//src/test/shell/bazel/remote:remote_execution_http_test on Ubuntu 22.04 LTS: FLAKY in 1 out of 2 runs in 943.9s (900.5s + 43.4s) (log)
//src/test/shell/bazel:bazel_determinism_test on CentOS 7: PASSED in 921.4s (log)
//src/test/shell/bazel:bazel_java_test (shard 2/2) on CentOS 7: PASSED in 839.7s (log)
//src/test/shell/bazel:bazel_java_test (shard 1/2) on CentOS 7: PASSED in 835.8s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_test on Windows: PASSED in 832.6s (log)
//src/test/shell/bazel:bazel_determinism_test on macOS arm64 (shard 5): PASSED in 806.8s (log)
//src/test/shell/integration:bazel_json_worker_test on Ubuntu 20.04 LTS: PASSED in 783.8s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_tar_test on Ubuntu 22.04 LTS: PASSED in 769.7s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_test on CentOS 7: PASSED in 742.8s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_tar_test on Ubuntu 20.04 LTS: PASSED in 737.9s (log)
//src/test/py/bazel:bazel_windows_cpp_test on Windows: PASSED in 706.6s (log)
//src/test/shell/bazel:bazel_java_test_jdk11_toolchain_head (shard 2/2) on Ubuntu 22.04 LTS: PASSED in 649.2s (log)
//src/test/shell/bazel:bazel_java_test_jdk21_toolchain_head (shard 2/2) on Ubuntu 20.04 LTS: PASSED in 637.0s (log)
//src/test/shell/bazel:bazel_java_test_jdk11_toolchain_head (shard 1/2) on Ubuntu 22.04 LTS: PASSED in 620.5s (log)

Bazel

Make the optimization to skip serializing generating action keys less brittle.

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