This is an umbrella issue of the project that moves annotations to a separate tree.

This change is mainly to solve:

• Poor performance when subscribing to MouseRegion events Poor performance when subscribing to MouseRegion events #41194

And it will also benefit:

• Transform mouse events to the local coordinate system Transform mouse events to the local coordinate system #33675
• IgnorePointer does not prevent Listener.hover events IgnorePointer does not prevent Listener.hover events #35213
• Add the ability to programmatically change pointer cursors. Add the ability to programmatically change mouse cursors. #31952