projectile-dir-files-alien returning deleted but unstaged files from git

[wyuenho]

git ls-files does not have the ability to remove deleted but unstaged files from the result, but does have the ability to only show deleted but unstaged files. projectile-dir-files-alien and projectile-get-sub-projects-files need to remove deleted but unstaged files before returning the result.

Steps to reproduce the problem

0. Make sure fd is not in PATH
1. git init repo
2. cd repo
3. echo "hello world" > greeting.txt
4. git commit -m "greeting" greeting.txt
5. rm greeting.txt
6. M-x eval-expression RET (projectile-dir-files (projectile-project-root)) -> ("greeting.txt")

Expectation:

nil should be returned

Environment & Version information

git version 2.45.2

Projectile version information

Projectile 20240212.1100

Emacs version

29.4

Operating system

macOS