Fix "app start in fullscreen"

[iacore]

This fixes #3220 but breaks window position memory.

I don't need the app to remember the window position, since I use a tiling window manager.

A more realistic fix:

Probably don't need to save {fullscreen: true, maximized: true} inside value

[absidue]

As this "fixes" the issue by breaking loads of other things, this is definitely the wrong approach. Removing functionality that many users like just because you personally don't need it is something you can do in custom builds for yourself but not in the main repo for a project like FreeTube.

Closing this in favour of #5138
If you still want to help, please provide suggestions on that existing pull request, which tries to fix it in a much less destructive way.