Bar rearrangement preserves widgets and changes section layout

outfoxxed opened and merged omacom/omarchy#15517 into quattro on October 15. The change separates the center box from the regions around it and stops recreating widgets during rearrangement.

The PR also describes improved dragging and corrected growth direction for expanding widgets such as the tray and indicators. This is a development-branch merge, with no stable-release event supplied.