Upgrade rules_java

[adam-singer]

Summary

Upgrade rules_java from 6.3.1 to 8.15.1 to leverage newer features and improvements in Java rules for Bazel.

Changes

• Upgraded dependencies:
  • rules_java: 6.3.1 → 8.15.1
  • platforms: 0.0.7 → 0.0.11
  • Added rules_shell: 0.6.1
• Updated configuration (.bazelrc):
  • Added --incompatible_autoload_externally=java_import to disable autoloading of external repositories (https://bazel.build/about/roadmap#migration_of_android_c_java_python_and_proto_rules)
  • Added --repositories_without_autoloads=bazel_features_version,bazel_features_globals (Disable autoloads in all bazel_features repositories bazelbuild/bazel#26119)
• Code adjustments:
  • Updated internal/jar_jar.bzl to explicitly import java_common from @rules_java//java/common
  • Updated src/test/bazel/BUILD.bazel to load sh_test from @rules_shell//shell
• Updated test module: Applied same rules_java version upgrade in test/MODULE.bazel

Testing

• Verified build passes with new rules_java version
• Ensured all existing tests continue to work