Move useLongPress to Pointer Events #580

useLongPress listens to both touch and mouse events. After a tap, browsers fire emulated mousedown/mouseup, so one tap is handled as two presses. #576 works around this by ignoring mouse presses within 1 second of a touch, which is a heuristic.

Listening to pointerdown/pointerup/pointercancel instead gives one event stream per press, so the emulated mouse events never reach the hook. pointercancel also cancels the press when the browser starts scrolling, which the hook does not handle today.

This is a breaking change:

• The returned handlers become onPointerDown, onPointerUp, onPointerLeave, onPointerCancel (and onPointerMove with moveThreshold).
• Callbacks receive PointerEvent instead of MouseEvent | TouchEvent.

Notes:

• Track pointerId and ignore non-primary pointers and non-left buttons.
• jsdom 25 has no PointerEvent, so tests need a small polyfill (jsdom 27+ ships one).
• The 1-second window from fix(useLongPress): ignore emulated mouse events after a touch #576 can be removed.

References: react-aria, ahooks, use-long-press

Waits for #576.