feat: Fix image resizing issue - EXO-74758 - Meeds-io/MIPs#145 (#672)

Prior to this change, resizing an inserted image in the editor was not
possible. The resizer remained attached to the mouse and only detached
when clicking outside the editor. This change addresses the issue by
attaching the pointerup event to the document instead of the mouseup
event

commons-extension-webapp/src/main/webapp/ckeditor/plugins/image2/plugin.js

@@ -1179,7 +1179,7 @@
 			attachToDocuments( 'mousemove', onMouseMove, listeners );
 
 			// Clean up the mousemove listener. Update widget data if valid.
-			attachToDocuments( 'mouseup', onMouseUp, listeners );
+			attachToDocuments( 'pointerup', onMouseUp, listeners );
 
 			// The entire editable will have the special cursor while resizing goes on.
 			editable.addClass( cursorClass );