chore: Add isRequired to NumberField RenderProps

[snowystinger]

Closes

a definitely correct part of #6151

✅ 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:

🧢 Your Project:

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## API Changes

react-aria-components

/react-aria-components:NumberFieldRenderProps

 NumberFieldRenderProps {
   isDisabled: boolean
   isInvalid: boolean
+  isRequired: boolean
   state: NumberFieldState
 }

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