Fix onStart callbacks of ReanimatedSwipeable being called every u…

…pdate (#3151)

## Description

Fix `onStart` callbacks of `ReanimatedSwipeable` being called every
update.

Moved from #3149

## Test plan

- open `Swipeable Reanimation` example
- replace the `ReanimatedSwipeable` component with the following code:
```js
<ReanimatedSwipeable
  containerStyle={styles.swipeable}
  onSwipeableOpenStartDrag={(direction) => console.log(direction)}
  onSwipeableCloseStartDrag={(direction) => console.log(direction)}>
  <Text>Swipeable!</Text>
</ReanimatedSwipeable>
```
- see how only one update is sent to the console, while before this PR
new updates were constantly generated

src/components/ReanimatedSwipeable.tsx

@@ -570,6 +570,8 @@ const Swipeable = forwardRef<SwipeableMethods, SwipeableProps>(
       }
     });
 
+    const dragStarted = useSharedValue<boolean>(false);
+
     const panGesture = Gesture.Pan()
       .onUpdate((event: GestureUpdateEvent<PanGestureHandlerEventPayload>) => {
         userDrag.value = event.translationX;
@@ -583,18 +585,25 @@ const Swipeable = forwardRef<SwipeableMethods, SwipeableProps>(
             ? 'left'
             : 'right';
 
-        if (rowState.value === 0 && onSwipeableOpenStartDrag) {
-          runOnJS(onSwipeableOpenStartDrag)(direction);
-        } else if (rowState.value !== 0 && onSwipeableCloseStartDrag) {
-          runOnJS(onSwipeableCloseStartDrag)(direction);
+        if (!dragStarted.value) {
+          dragStarted.value = true;
+          if (rowState.value === 0 && onSwipeableOpenStartDrag) {
+            runOnJS(onSwipeableOpenStartDrag)(direction);
+          } else if (rowState.value !== 0 && onSwipeableCloseStartDrag) {
+            runOnJS(onSwipeableCloseStartDrag)(direction);
+          }
         }
+
         updateAnimatedEvent();
       })
       .onEnd(
         (event: GestureStateChangeEvent<PanGestureHandlerEventPayload>) => {
           handleRelease(event);
         }
-      );
+      )
+      .onFinalize(() => {
+        dragStarted.value = false;
+      });
 
     if (enableTrackpadTwoFingerGesture) {
       panGesture.enableTrackpadTwoFingerGesture(enableTrackpadTwoFingerGesture);