fix: remove Windows directory symlinks recursively

[a-rookie-of-C-language]

Summary

• Fix rm -rf on Windows directory symlinks (SYMLINKD).
• Avoid treating directory symlinks as regular files during recursive removal.
• Remove the link itself with the directory removal path instead of calling remove_file().
• Avoid counting directory symlink targets recursively for progress accounting.

Validation

• cargo check --manifest-path deps\coreutils\Cargo.toml -p uu_rm
• cargo test --manifest-path deps\coreutils\Cargo.toml --features rm --test tests test_recursive_symlink_dir_removes_link_not_target

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/date/date-locale-hour (fails in this run but passes in the 'main' branch)
Congrats! The gnu test tests/cp/link-heap is now passing!
Congrats! The gnu test tests/tail/pipe-f is now passing!