fix chromatic accordion

[snowystinger]

Closes
Found here https://www.chromatic.com/test?appId=5f0dd5ad2b5fc10022a2e320&id=6421ce82dacf8a735dc70f65

The CSS in this file did not reflect the actual dom structure and since the color should always be the same as the text we can make the previous specificity winner the default and use inherit instead of specifying colors directly for the chevron

✅ 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:

[rspbot]

Build successful! 🎉

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[LFDanLu]

LGTM, thanks for the fix

[rspbot]

Build successful! 🎉

• View the storybook
• View the storybook-17
• View the storybook-16
• View the documentation

[rspbot]

## API Changes

unknown top level export { type: 'identifier', name: 'Column' }
unknown top level export { type: 'identifier', name: 'Column' }
unknown type { type: 'link' }
unknown type { type: 'link' }
unknown type { type: 'link' }
unknown type { type: 'link' }
unknown type { type: 'link' }
unknown type { type: 'link' }