After #21855 is in, we'll need to address the case where include()d files need tidying. This would require Bazel itself to generate proper fixup events for included files (potentially only for extension proxies that are bound to a variable, IOW 'exported'), and for Buildozer to properly handle files that are MODULE.bazel-like but not exactly named "MODULE.bazel" (per discussion in the PR, they would be called foo.MODULE.bazel).