Slowest 20 targets

//src/test/shell/bazel:bazel_bootstrap_distfile_test on macOS (shard 4): FLAKY in 1 out of 2 runs in 2688.4s (1237.2s + 1451.2s) (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_test on Windows: PASSED in 1251.5s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_tar_test on CentOS 7: PASSED in 1032.7s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_test on CentOS 7: PASSED in 1030.9s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_tar_test on Ubuntu 20.04 LTS: PASSED in 842.6s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_tar_test on Ubuntu 22.04 LTS: PASSED in 787.4s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_test on Ubuntu 22.04 LTS: PASSED in 787.0s (log)
//src/test/shell/bazel:bazel_determinism_test on Ubuntu 22.04 LTS: PASSED in 739.2s (log)
//src/test/shell/bazel:bazel_determinism_test on macOS arm64 (shard 3): PASSED in 677.3s (log)
//src/test/shell/integration:bazel_json_worker_test on CentOS 7: PASSED in 670.6s (log)
//src/test/shell/bazel:bazel_java_test_jdk21_toolchain_head (shard 2/2) on Windows: PASSED in 649.6s (log)
//src/test/shell/bazel:bazel_java_test_jdk11_toolchain_head (shard 2/2) on Windows: PASSED in 648.7s (log)
//src/test/shell/bazel:bazel_coverage_java_jdk11_toolchain_released_test on CentOS 7: PASSED in 638.6s (log)
//src/test/shell/bazel:bazel_java_test_jdk21_toolchain_head (shard 1/2) on Windows: PASSED in 638.3s (log)
//src/test/shell/bazel:bazel_java_test_jdk11_toolchain_head (shard 1/2) on Windows: PASSED in 637.8s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_test on Ubuntu 20.04 LTS: PASSED in 636.8s (log)
//src/test/shell/bazel:bazel_java_test_jdk17_toolchain_head (shard 2/2) on Windows: PASSED in 634.4s (log)
//src/test/shell/bazel:bazel_java_test_jdk17_toolchain_head (shard 1/2) on Windows: PASSED in 630.3s (log)
//src/test/shell/bazel:bazel_java_test (shard 2/2) on Ubuntu 20.04 LTS: PASSED in 622.7s (log)
//src/test/shell/bazel:bazel_determinism_test on Ubuntu 20.04 LTS: PASSED in 614.6s (log)

Bazel

Remove redundant logic from PersistentMap.load().

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