[Xoppyc]

Summary

Previously, dragging the toolbar by holding down on an IconButton would trigger a click event on that button upon release, unintentionally opening or toggling a panel.

• Track drag distance (isDragging) with a 4px threshold so normal clicks still function immediately while intentional drags are distinguished.
• Add a capture-phase click event listener on handle that calls stopPropagation() and preventDefault() if a drag just occurred, swallowing the event before it reaches the child buttons.

Notes

I used pnpm format and for some reason previously L15-L17 were expanded by the formatter

[lxsmnsyc]

merging this for now, it's still has value even if the dock change is upcoming.