Full screen on macOS

[rbottiglieri]

On macOS, Firefox does not remember its full screen state when exiting and relaunching the application. Here's what happens:

1. Place the app in full screen by clicking the green button in the upper left of the window "Enter Full Screen".

2. Exit Firefox.

3. Launch Firefox, and it opens up with a large window but not full screen.

The problem is that the relaunch should open full screen again, just like other macOS apps do. This is annoying and has been outstanding for a long time.

[rbottiglieri]

Firefox 132 has included some improvements on macOS, but still no native session restore to full screen when quitting the app while it's in full screen. Would also be nice to include native contextual menu support for the dictionary "Lookup" feature when right-clicking on a word. The keyboard shortcut works on macOS (cmd+ctrl+d), but it should also be in the conext menu.