Reveal always_included entries in Project Panel (#26197)

If the user has the `auto_reveal` option enabled, as well as
`file_scan_inclusions` and opens a file that is gitignored but is also
set to be always included, that file won't be revealed in the project
panel. I've personally found this annoying, as the project panel can
provide useful context on where you are in a codebase. It also just
feels weird for it to be out of sync with the editor state.

Release Notes:

- Fixed the interaction between `auto_reveal`, `file_scan_inclusions`,
and `.gitignore` within the Project Panel. Files that are always
included will now be auto-revealed in the Project Panel, even if those
files are also gitignored.