Reland "Handle uiMode changes in QuickstepLauncher"

- Added uiMode in handled configChanges for QuickstepLauncher, NexusLauncherActivity
- RecentsActivity will be handled separately in b/382072029
- This avoids Launcher from being recreated when swithching from an app in driving mode (e.g. Maps), which causes massive jank
- Launcher layout is unaffected when driving mode changes, so a recreation is unnecessary
- When Light/dark mode changes, BaseActivity.updateTheme will still causes activity to be recreated. Launcher will mark a boolean in saved staete so next recreate will restore previous state even if state has FLAG_DISABLE_RESTORE (e.g. Overview), similar to the existing check that force restore when UI_MODE changes

Relanded changes: /q/submissionid:27627108-b/339747262

Fix: 339747262
Test: Swtich from driving mode app to another or home in 1p and 3p laucnher
Test: Switch light/dark mode and Launcher is updated correctly and stay in previous state
Flag: EXEMPT bugfix
Change-Id: I5a62b1bcd19eed9d232f30db94aa0e032f4541bd