fix: set text alignment for keyboard component

[LucidityDesign]

Closes #8343

✅ 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:

[LucidityDesign]

After singing the CLA, reopening doesn't solve the "CLA signed" check. Do I have to create a new PR?

[snowystinger]

I'd double check that you used the e-mail address matching this github account. It's pretty common to use a different one unintentionally