fix: only focus on input if modal is open

[enjeck]

fixes #1257

[elzody]

Simple enough, couldn't find a better solution myself. Not sure why the optional chaining on the function call doesn't work :D

I think to fix the tests it just needs an npm run lint:fix

[juliusknorr]

Ideally squash the commits into one or use git commit --amend or fixup commits to have a clean git history. That way it is much easier whenever someone needs to refer back to the change which can then be one atomic commit.