Use metal-drag-drop autoScroll instead of a self-implemented scrolling

• Type: Technical Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: Master
• Component/s: Pages > Page Editor, ~[Archived] WCM > Navigation
• Labels:
  • ee-ts
• Sprint: 7.2 - S1, 7.2 - S2
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/63612

We have a custom implementation of scrolling while doing drag and drop. It should use metal-drag-drop's autoScroll option instead of rely on our implementation.