fix: typescript for slotted context value

[snowystinger]

Closes

Reverts #9423 which was identified during an audit. See #9422 (comment) for an explanation.

✅ 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

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