tail: fix -F to properly track symlinks with changing targets

[ChrisDryden]

When investigating the symlink test, it seemed that it was expecting very similar behaviour to the way that we track orphan files. Did some testing around to see if we could place the symlink files that have broken links to the orphan tracker in the event loop when unable to access the metadata to reuse the logic. Seemed to match the behaviour that the gnu test was expecting.

[ChrisDryden]

The new integration test appears to be failing on some platforms, moving back to draft to investigate

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/tail/symlink is no longer failing!

[anastygnome]

Hey, IIrc the has appeared message is sometimes random. Even with gnu utils

[github-actions]

GNU testsuite comparison:

Skipping an intermittent issue tests/tty/tty-eof (passes in this run but fails in the 'main' branch)
Congrats! The gnu test tests/tail/symlink is no longer failing!

[sylvestre]

@ChrisDryden why did you close it ? :)

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/tail/symlink is no longer failing!

[codspeed-hq]

CodSpeed Performance Report

Merging this PR will not alter performance

_{Comparing ChrisDryden:tail-follow-symlink (223e0e5) with main (cbbff30)}

Summary

✅ 142 untouched benchmarks
⏩ 180 skipped benchmarks¹

Footnotes

1. 180 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/tail/inotify-dir-recreate (fails in this run but passes in the 'main' branch)
Congrats! The gnu test tests/tail/symlink is no longer failing!

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/shuf/shuf-reservoir (fails in this run but passes in the 'main' branch)
Skip an intermittent issue tests/sort/sort-stale-thread-mem (fails in this run but passes in the 'main' branch)
Congrats! The gnu test tests/tail/symlink is no longer failing!

[ChrisDryden]

I think its good to go now

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/tail/symlink is no longer failing!
Note: The gnu test tests/dd/no-allocate is now being skipped but was previously passing.