[core] Refactor popup component style hooks to `data-popup-open`, `data-open`

[atomiks]

• [x] I have followed (at least) the PR section of the contributing guide.

Closes https://github.com/mui/base-ui/issues/717

Style hooks refer to themselves or closely related components:

• Trigger receives data-popup-open
• Backdrop, Popup, Positioner and child components receive data-open
• Menu data-radioitem -> data-radio-item-{checked,unchecked}
• Menu data-checkboxitem -> data-checkbox-item-{checked,unchecked}
• Components that don't need to read open remove the state
• React.useMemo the ownerState for missing components
• Make data-entering/data-exiting consistent

[mui-bot]

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