fix: add onAction type to RAC TagGroup

[onx2]

Closes #9205

✅ 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:

onAction works for React Aria Component's TagGroup and is a valid group-level prop.

🧢 Your Project:

Weights & Biases component library (currently private)