[macOS]: Minimized windows are no longer minimized upon app restart

[jerryjappinen]

Summary

Currently, when the user quits Zed and then restarts it, minimized windows are opened in unminimized state. This goes against windowing conventions on macOS. Zed should persist the minimized state per window across app quit/restart, so that the user does not have to manually reminimize windows as they work on multiple projects.

Steps to trigger the problem:

1. Open Zed on macOS
2. Open two or more windows
3. Minimize some windows
4. Quit Zed
5. Open Zed

Actual Behavior:
All windows, even the minimized ones, are opened in unminimized state.

Zed.mov

Expected Behavior:
Minimized windows should stay minimized, even if the user quits and then restarts the app. If all windows were minimized upon quit and no windows would be otherwise visible when the app is restarted, the last active window should be unminimized.

Example from Apple Keynote:

Apple.Keynote.mov

Example from Google Chrome:

Google.Chrome.mp4

Note: This issue is not the same as #14212

Zed Version and System Specs

Zed: v0.171.6 (Zed)
OS: macOS 15.2.0
Memory: 24 GiB
Architecture: aarch64

[osiewicz]

This looks like a regression from #24015