fix: remove UIPointerInteraction from the view when unbinding the hover handler (#4291)

## Description

Fixes #4290.

`RNHoverGestureHandler` adds a `UIPointerInteraction` to the view in
`bindToView:`, but never actually removes it. In `unbindFromView`,
`[super unbindFromView]` runs first and detaches the gesture recognizer,
which sets `self.recognizer.view` to nil. The following
`removeInteraction:` call is then a message to nil and does nothing, so
the interaction stays on the `UIView` for the rest of its life.

With Fabric view recycling, that leaked interaction later belongs to an
unrelated component. Its delegate (the recognizer) is gone by then, and
a `UIPointerInteraction` without a delegate applies the system default
pointer effect over the whole view. The visible result is native hover
effects (very prominent with the Liquid Glass style on iPadOS 26)
appearing on random elements that never had a hover gesture,
accumulating as hover handlers unmount and remount.

This PR captures the view reference before calling `[super
unbindFromView]` and removes the interaction from the captured
reference.

## Test plan

Tested in an app that uses `Gesture.Hover()` on most of its toolbar and
menu items, on a real iPad (iPadOS 26) with Apple Pencil hover and a
trackpad:

- Before the change: after a few mount/unmount cycles of hover-enabled
views, hovering over unrelated elements shows the native hover effect on
random views.
- With the change (applied to the app as a package patch): the stray
hover effects no longer appear, and hover gestures keep working as
before.
- The `RNGestureHandler` pod compiles cleanly with the change.

Author: petterikorpimaa

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

@@ -122,8 +122,9 @@ - (void)unbindFromView
 {
 #if CHECK_TARGET(13_4)
   if (@available(iOS 13.4, *)) {
-    [super unbindFromView];
+    // Remove the interaction before [super unbindFromView] detaches the recognizer and nils recognizer.view.
     [self.recognizer.view removeInteraction:_pointerInteraction];
+    [super unbindFromView];
   }
 #endif
 }