Add operation slow because of status fetching immediately after

### Describe the bug
Adding a modified file so it's staged takes a long time. The logs show that the add operation is fast, but the subsequent status operation is slow due to submodules being present and queried.

### To Reproduce
On Windows, open lazygit in a repo with +20 submodules. Add staged files in the main repo. The first one is always quick, but the other ones are slow. Adding/undoing adding is slow +- 4 seconds on my machine. I'm guessing the more submodules, the slower it will be.

### Expected behavior
Add operations should be fast!

### Version info:

commit=0d5a410114036e2151087e6a8cf5295cca317c16, build date=2025-09-06T08:19:01Z, build source=binaryRelease, version=0.55.0, os=windows, arch=amd64, git version=2.51.0.windows.2

### Additional context
When I run the command in the terminal it takes a similar amount of time. I think it should be possible to ignore the submodules when running the status command immediately after staging a file. This speeds it up a lot!

SLOW: git status --untracked-files=all --porcelain -z --find-renames=50%
FAST: git status --untracked-files=all --porcelain -z --find-renames=50% --ignore-submodules=all