Support tab-complete when manually opening files excluded through gitignore

[akprasad]

I use .gitignore to exclude log files and output files from my repo, but I would like to be able to manually inspect these files through my editor when debugging.

In my previous editor setup (AstroNvim), the editor excludes these files from the fuzzy finder, but I am still able to view them through :e then tab-complete their filenames so that I can quickly open them.

In Helix, the editor sensibly excludes these files from the fuzzy finder, but I cannot see them listed when running :e and must type out the full file name if I wish to open them.

It would be ideal for me if Helix would use the same approach AstroNvim does, but if that is not possible or desirable, even some partial support in this direction would make it easier for me to view git-excluded files.

I checked the Issues backlog for issues relating to ignore and gitignore but didn't see this exact issue. There is a related discussion in this comment on #7715.