When running flycheck, I've noticed that scrolling starts to lag:
https://github.com/user-attachments/assets/b0bef0a3-ccbd-479d-a385-273398086d38
When checking the trace, it is notable that project panel updates its
entire tree multiple times during flycheck:
<img width="2032" height="1136" alt="image"
src="https://github.com/user-attachments/assets/d1935e77-3b00-4be5-a12a-8a17a9d64202"
/>
[scrolling.trace.zip](https://github.com/user-attachments/files/22710852/scrolling.trace.zip)
Turns out, `target/debug` directory is loaded by Zed (presumably,
reported by langserver as there are sources generated by bindgen and
proto that need to be loaded), and `target/debug/build` directory
received multiple events of a `None` kind for Zed, which trigger the
rescans.
Rework the logic to omit the `None`-kind events in Zed, and to avoid
excessive repo updates if not needed.
Release Notes:
- Improved worktree FS event emits in gitignored directories
---------
Co-authored-by: Cole Miller <cole@zed.dev>
