interface/editor/editor_screen setting has no effect once window position is remembered

[KoBeWi]

Tested versions

4.4 dev2

System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 31.0.15.4633) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

Issue description

There is interface/editor/editor_screen editor setting, which defines where the editor should appear at startup. After #76085, the editor will use the last window position (including screen), making the setting effectively useless. It has effect only when a project is opened for the first time.

Maybe we should just remove this setting now.

Steps to reproduce

1. Change interface/editor/editor_screen to Screen 1
2. Restart the editor while it is on screen 2
3. It starts on screen 2

Minimal reproduction project (MRP)

N/A

[akien-mga]

We can either remove the setting, or change it to default to "Auto" that would be remembering the last position, and the other options should be treated as overrides.

[bits-by-brandon]

I like the idea of an "Auto" setting. Perhaps we can merge in the separate interface/editor/remember_window_size_and_position setting into this "Auto" option?
Also some alternatives names for "Auto"

• Persist
• Remember

[bits-by-brandon]

I have a really rough PR of what this might look like. #97333
I'm a total C++ beginner though, so it's not entirely functional yet 😅