feat(usePress): add key to PressEvent

[reidbarber]

Related discussion: #9487

Passes through the key property to PressEvent, which makes it easier to tell if the keyboard-triggered press event was from a Space or Enter key press.

Allows us to remove these hacks:

react-spectrum/packages/@react-aria/selection/src/useSelectableItem.ts

Lines 410 to 418 in c2517d3

	function isActionKey() {
	let event = window.event as KeyboardEvent;
	return event?.key === 'Enter';
	}
	function isSelectionKey() {
	let event = window.event as KeyboardEvent;
	return event?.key === ' ' || event?.code === 'Space';
	}

✅ Pull Request Checklist:

• Included link to corresponding React Spectrum GitHub Issue.
• Added/updated unit tests and storybook for this change (for new code or code which already has tests).
• Filled out test instructions.
• Updated documentation (if it already exists for this component).
• Looked at the Accessibility Practices for this feature - Aria Practices

📝 Test Instructions:

Open a Button story in storybook and check the PressEvent object in the Actions panel.

🧢 Your Project:

[rspbot]

Build successful! 🎉

• View the storybook
• View the S2 storybook
• View the S2 docs
• View the React Aria docs

[rspbot]

## API Changes

react-aria-components

/react-aria-components:PressEvent

 PressEvent {
   altKey: boolean
   continuePropagation: () => void
   ctrlKey: boolean
+  key?: string
   metaKey: boolean
   pointerType: PointerType
   shiftKey: boolean
   target: Element
   x: number
   y: number
 }

---

@react-aria/interactions

/@react-aria/interactions:PressEvent

 PressEvent {
   altKey: boolean
   continuePropagation: () => void
   ctrlKey: boolean
+  key?: string
   metaKey: boolean
   pointerType: PointerType
   shiftKey: boolean
   target: Element
   x: number
   y: number
 }

---