[General] Allow to create gestures with no config

[j-piasecki]

Description

Updates gesture hook signatures to include the default, empty config for each gesture. This allows for creating gesture objects without passing a config, like so:

const nativeGesture = useNativeGesture()

Native gesture would be the most useful here, since its config is often empty when pulling in a host component into RNGH's gesture system. Other gestures may be a nice DX improvement, though, since now it's simpler to create a "placeholder" gesture.

The default config is referentially stable, so it shouldn't cause unnecessary updates between renders as opposed to passing an empty object (with no compiler and memoization).

Test plan

Static checks

[Copilot]

Pull request overview

This PR updates the API v3 gesture hook signatures to allow creating gesture objects without providing a config argument, by defaulting the config to a referentially stable empty object.

Changes:

• Add per-hook EMPTY_*_CONFIG constants and default the config parameter to them.
• Enable calling gesture hooks with no arguments (e.g., useNativeGesture()), while keeping memoization stable across renders.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
packages/react-native-gesture-handler/src/v3/hooks/gestures/tap/useTapGesture.ts	Default config to a stable empty Tap config.
packages/react-native-gesture-handler/src/v3/hooks/gestures/rotation/useRotationGesture.ts	Default config to a stable empty Rotation config.
packages/react-native-gesture-handler/src/v3/hooks/gestures/pinch/usePinchGesture.ts	Default config to a stable empty Pinch config.
packages/react-native-gesture-handler/src/v3/hooks/gestures/pan/usePanGesture.ts	Default config to a stable empty Pan config (including DEV validation path).
packages/react-native-gesture-handler/src/v3/hooks/gestures/native/useNativeGesture.ts	Default config to a stable empty Native config.
packages/react-native-gesture-handler/src/v3/hooks/gestures/manual/useManualGesture.ts	Default config to a stable empty Manual config.
packages/react-native-gesture-handler/src/v3/hooks/gestures/longPress/useLongPressGesture.ts	Default config to a stable empty LongPress config.
packages/react-native-gesture-handler/src/v3/hooks/gestures/hover/useHoverGesture.ts	Default config to a stable empty Hover config.
packages/react-native-gesture-handler/src/v3/hooks/gestures/fling/useFlingGesture.ts	Default config to a stable empty Fling config.

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