fix: prevent modal reopen by settling canceled animation promises

[christophmeise]

Closes #8786

✅ 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

Summary

• Replace Promise.all(...) with Promise.allSettled(...) in useAnimation.
• Ensure onEnd still runs when one or more animation.finished promises reject due to canceled or interrupted animations.
• This addresses the modal reopening behavior tracked in #8786.

📝 Test Instructions:

1. Build and run a production app that reproduces #8786.
2. Open the navbar modal and click a navigation link.
3. Navigate to a page containing Tailwind Typography prose content.
4. Verify the modal does not reopen after navigation in Chrome.
5. Verify normal enter/exit animation behavior still works and onEnd is called for uninterrupted animations.
6. Interrupt or cancel an in-progress animation and verify cleanup still occurs even if an animation.finished promise rejects.

🧢 Your Project:

Personal contribution