fix: handle pointercancel only for drags (#9373)

Author: maribethb

core/gesture.ts

@@ -467,6 +467,15 @@ export class Gesture {
         /* opt_noCaptureIdentifier */ true,
       ),
     );
+    this.boundEvents.push(
+      browserEvents.conditionalBind(
+        document,
+        'pointercancel',
+        null,
+        this.handleUp.bind(this),
+        /* opt_noCaptureIdentifier */ true,
+      ),
+    );
 
     e.preventDefault();
     e.stopPropagation();

core/touch.ts

@@ -46,7 +46,6 @@ export const TOUCH_MAP: {[key: string]: string[]} = {
   'mouseup': ['pointerup', 'pointercancel'],
   'touchend': ['pointerup'],
   'touchcancel': ['pointercancel'],
-  'pointerup': ['pointerup', 'pointercancel'],
 };
 
 /** PID of queued long-press task. */