Preserve fallback platform in exec/host transition.

Previously the exec/host transition would set the fallback target platform back to its default whereas the --target_platform_fallback flag's semantics were meant to apply everywhere the platform_mapping does not get used. This change ensures the fallback uses the value of the passed flag in all instances (unless explicitly reset by a transition).

RELNOTES: --target_platform_fallback now also applies to exec/host configurations
PiperOrigin-RevId: 277557685
2 files changed
tree: 5ac02295db5dd1ef12f9155ce22ce4c007b4ac1b
  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. CODEOWNERS
  15. combine_distfiles.py
  16. combine_distfiles_to_tar.sh
  17. compile.sh
  18. CONTRIBUTING.md
  19. CONTRIBUTORS
  20. distdir.bzl
  21. ISSUE_TEMPLATE.md
  22. LICENSE
  23. README.md
  24. WORKSPACE
README.md

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