Tooltip: Stop tracking the mouse if the element gains focus. Fixes #8…

…622 - Tooltip tracks mouse when the element has focus.

ui/jquery.ui.tooltip.js

@@ -140,6 +140,8 @@ $.widget( "ui.tooltip", {
 			this._find( target ).position( $.extend({
 				of: target
 			}, this.options.position ) );
+			// Stop tacking (#8622)
+			this._off( this.document, "mousemove" );
 			return;
 		}