New drag-and-drop engine follow-ons

[chrisvxd]

Follow-ons from #556 / #598:

• Slow drop rendering with large payloads (related to Improve rendering performance #644, More portable data payload #255 as requires elimination of context via new field-based DropZone API).
• Scroll position not properly accounted for. To reproduce, scroll so second card grid is just in frame, then drag item above. Notice it will snap higher than expected. Possible fallback collision bug, or requires possible upstream fix.

Blocked by upstream fixes

• Switch to upstream PointerSensor fix for rapid insertion of new items, resulting in pointerup event not being listened to on document change - fix: use fixed event listeners to address race conditions clauderic/dnd-kit#1566
• Items slightly incorrect when repositioning after dragging between nested areas (requires upstream fix)
• Drop position slightly off on drop in Safari(requires upstream fix)

[chrisvxd]

Immediate follow-ons handled in #767. Still waiting for upstream fixes for remaining items.