Backport recent package metadata and license check capabilities from Bazel 6.x. (#16892)

More context: https://docs.google.com/document/d/1uyJjkKbE8kV8EinakaR9q-Un25zCukhoH_dRBkWHSKQ/edit#

1. Rename default_applicable_licenses to default_package_metadata.

Leave default_applicable_licenses as an alias.  Don't allow both to be set.

Pick: https://github.com/bazelbuild/bazel/commit/ace99b575fe1e43f7591b75cf5d1c867175f9980

2.  Improve the check for being a package metadata rule

This allows the refactoring which will happen after default_applicable_licenses is renamed to default_package_metadata. The current behavior is intended to prevent `applicable_licenses` from being set on a `license` rule. The required behavior is that we don't set `applicable_licenses` on any of the metadata rules.

Pick: https://github.com/bazelbuild/bazel/commit/bbc221f60bc8c9177470529d85c3e47a5d9aaf21
5 files changed
tree: 4d615a33a6d8de226883d8f221233c99f9dca4a9
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .bazelrc
  9. .gitattributes
  10. .gitignore
  11. AUTHORS
  12. BUILD
  13. CHANGELOG.md
  14. CODE_OF_CONDUCT.md
  15. CODEBASE.md
  16. CODEOWNERS
  17. combine_distfiles.py
  18. combine_distfiles_to_tar.sh
  19. compile.sh
  20. CONTRIBUTING.md
  21. CONTRIBUTORS
  22. distdir.bzl
  23. distdir_deps.bzl
  24. ISSUE_TEMPLATE.md
  25. LICENSE
  26. README.md
  27. SECURITY.md
  28. WORKSPACE
  29. WORKSPACE.bzlmod
README.md

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