chore: followup on MessageSource/MessageSuggestion from testing

[yihuiliao]

Follow up #10095

• Removes the isPressed background color from MessageSuggestion
• Fixes press scaling for Message Suggestion
• The number badges in a MessageSourceList respond to t-shirt sizing (not sure if design even support t-shirt sizing for these components but an easy enough fix so I've added it)
• Adds hover state to ResponseStatus (the style could be debated. it might be feel strange that the checkmark is not aligned at the end of the button which is only obvious once you hover over the disclosure).

Things still to resolve:
Should we use UI icons for the chevron in ResponseStatus

✅ 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:

• Removes the isPressed background color from MessageSuggestion
• Fixes press scaling for Message Suggestion so it should transition
• The number badges in a MessageSourceList respond to t-shirt sizing
• Adds hover state to ResponseStatus

🧢 Your Project:

[rspbot]

Build successful! 🎉

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• View the S2 storybook
• View the S2 docs
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[yihuiliao]

seems like the labeler is mislabeling these changes as v3 bc they're under @react-spectrum. this updates the labeler to exclude labeling anything under ai as v3 (hopefully)

[rspbot]

Build successful! 🎉

• View the storybook
• View the S2 storybook
• View the S2 docs
• View the React Aria docs

[rspbot]

Build successful! 🎉

• View the storybook
• View the S2 storybook
• View the S2 docs
• View the React Aria docs