🎨 Palette: Add ARIA live region and aria-describedby for Add Domain wizard error

[schmug]

💡 What: Added aria-describedby, role="alert", and aria-live="polite" to the Add Domain wizard's input and error container.
🎯 Why: Previously, if a user submitted an invalid domain, the error message would appear visually but would not be announced by screen readers since focus remained on the input and the container lacked ARIA live region attributes.
📸 Before/After: No visual changes.
♿ Accessibility: Screen readers will now dynamically announce validation errors as they occur within the wizard form, improving the keyboard/assistive technology experience without disrupting focus.

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PR created automatically by Jules for task 14238535660831995243 started by @schmug

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Status	Name	Latest Commit	Updated (UTC)
✅ Deployment successful! View logs	dmarcheck	fd2d55e	May 07 2026, 01:27 AM