fix: collections nested within Activities (React 19.2)

[mhornbacher]

Closes #9173

✅ Pull Request Checklist:

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

📝 Test Instructions:

Nest any component that uses Collections (Table, ListBox, Tabs...) within an Activity or a Next.js app route using cache components