[iOS] Fix wrong pointerType in Hover gesture (#3989)

## Description

`Hover` gesture events contain wrong pointer type. Normally, we map
`UITouchTypePencil` to `RNGestureHandlerStylus`, but `Hover` used
unmapped `UITouchTypePencil` instead.

Because those enums map to different values (`UITouchTypePencil = 2` &
`RNGestureHandlerStylus = 1`), it caused wrong pointer type to be
returned.

Fixes #3977

## Test plan

Not yet as now I don't have access to iPad 😞

Author: m-bert

packages/react-native-gesture-handler/apple/Handlers/RNHoverHandler.m

@@ -157,7 +157,7 @@ - (RNGestureHandlerEventExtraData *)eventExtraData:(UIGestureRecognizer *)recogn
 {
   return [RNGestureHandlerEventExtraData forPosition:[recognizer locationInView:recognizer.view]
                                 withAbsolutePosition:[recognizer locationInView:recognizer.view.window]
-                                     withPointerType:UITouchTypePencil];
+                                     withPointerType:RNGestureHandlerStylus];
 }
 
 @end