Gate onPointerCancel

Co-authored-by: Copilot <copilot@github.com>

Author: j-piasecki

packages/react-native-gesture-handler/src/web/handlers/GestureHandler.ts

@@ -362,7 +362,9 @@ export default abstract class GestureHandler implements IGestureHandler {
   protected onPointerCancel(_event: AdaptedEvent): void {
     // No need to send a cancel touch event explicitly here. `cancel` will
     // handle cancelling all tracked touches if the handler expects pointer data.
-    this.cancel();
+    if (GestureHandlerOrchestrator.instance.isHandlerRecorded(this)) {
+      this.cancel();
+    }
   }
   protected onPointerOutOfBounds(event: AdaptedEvent): void {
     this.tryToSendMoveEvent(true, event);

packages/react-native-gesture-handler/src/web/tools/GestureHandlerOrchestrator.ts

@@ -32,6 +32,10 @@ export default class GestureHandlerOrchestrator {
     handler.activationIndex = Number.MAX_VALUE;
   }
 
+  public isHandlerRecorded(handler: IGestureHandler): boolean {
+    return this.gestureHandlers.includes(handler);
+  }
+
   public removeHandlerFromOrchestrator(handler: IGestureHandler): void {
     const indexInGestureHandlers = this.gestureHandlers.indexOf(handler);
     const indexInAwaitingHandlers = this.awaitingHandlers.indexOf(handler);