[iOS] Activate buttons on pointer up

[j-piasecki]

Description

Changes the moment the ACTIVE event is dispatched on iOS from pointer down to pointer up, aligning it with Android and Web implementations.

Updates existing checks to account for this change.

Updates the v3 button implementation to do cleanup in onFinalize instead of onDeactivate - setup happens in onBegin, so there's no guarantee that onDeactivate will trigger.

Test plan

Tested existing examples, including legacy ones

[Copilot]

Pull request overview

Adjusts button activation semantics on iOS to dispatch ACTIVE on pointer-up (to match Android/Web), and updates JS-side button/touchable logic to work with the new state timing.

Changes:

• Moves v3 BaseButton cleanup/press dispatching from onDeactivate to onFinalize.
• Updates legacy touchable/button state handling to treat BEGAN as “active” and to trigger press-in on BEGAN.
• Updates iOS RNNativeViewGestureHandler to emit an ACTIVE update on touchUpInside before END.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
packages/react-native-gesture-handler/src/v3/components/GestureButtons.tsx	Moves press/cleanup to onFinalize for v3 buttons.
packages/react-native-gesture-handler/src/components/touchables/GenericTouchable.tsx	Simplifies state transition trigger to always use State.BEGAN.
packages/react-native-gesture-handler/src/components/GestureButtons.tsx	Treats BEGAN as active for legacy button active-state tracking.
packages/react-native-gesture-handler/apple/Handlers/RNNativeViewHandler.mm	Emits an ACTIVE update on pointer-up-inside prior to END.

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