Ensure that extension unique names followed by `~` are prefix-free (#19167)

Fixes errors such as the following when a module provides two extensions that share a name:

```
ERROR: /my/workspace/library_path/BUILD:4:13: no such package '@_main~my_ext~2~xyz//':
The repository '@_main~my_ext~2~xyz' could not be resolved:
Repository '@_main~my_ext~2~xyz' is not defined and referenced by '//library_path:library_name'
ERROR: Analysis of target '//my_path:my_target' failed; build aborted:
```

This was a consequence of the extension unique names followed by `~` being

```
_main~my_ext~2~
_main~my_ext~
```

since 19a971089952e53bba130a8e3e8b28b6b1e310e6. Before, they were of the following form, which was prefix-free:

```
_main~my_ext2~
_main~my_ext~
```

Fixes #19155

Closes #19156.

PiperOrigin-RevId: 553567725
Change-Id: I98650663fea3bfee77752a06a99132e507d91aef

Co-authored-by: Fabian Meumertzheim <fabian@meumertzhe.im>
3 files changed
tree: a3cc39d4cba80f050ec19856902f377744ce52bb
  1. .bazelci/
  2. .github/
  3. examples/
  4. scripts/
  5. site/
  6. src/
  7. third_party/
  8. tools/
  9. .bazelrc
  10. .bazelversion
  11. .gitattributes
  12. .gitignore
  13. AUTHORS
  14. BUILD
  15. CHANGELOG.md
  16. CODE_OF_CONDUCT.md
  17. CODEOWNERS
  18. combine_distfiles.py
  19. combine_distfiles_to_tar.sh
  20. compile.sh
  21. CONTRIBUTING.md
  22. CONTRIBUTORS
  23. distdir.bzl
  24. distdir_deps.bzl
  25. LICENSE
  26. MODULE.bazel
  27. README.md
  28. SECURITY.md
  29. WORKSPACE
  30. WORKSPACE.bzlmod
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