plugin-seo: Auto-generate button has no loading state when generateTitle/generateURL is async

Describe the Bug

The Auto-generate button in the SEO plugin fields (MetaTitleComponent, MetaDescriptionComponent) does not show any loading state while the async generateTitle / generateDescription function is running.

Both components call the async function with void and never set a loading flag:

MetaTitleComponent — packages/plugin-seo/src/fields/MetaTitle/MetaTitleComponent.tsx

onClick: () => {
  void regenerateTitle() // no loading state
}

MetaDescriptionComponent — packages/plugin-seo/src/fields/MetaDescription/MetaDescriptionComponent.tsx

onClick: () => {
  void regenerateDescription() // no loading state
}

The button stays enabled and shows no spinner while an async fetch to /api/plugin-seo/generate-title (or generate-description) is in progress. When generateTitle/generateDescription performs a DB lookup (e.g. fetching tenant config), the wait can be multiple seconds with zero UI feedback.

Expected Behavior

• The button should be disabled while the request is in flight
• A loading indicator (spinner or text change) should be shown
• Applies to both MetaTitleComponent and MetaDescriptionComponent

Reproduction

No reproduction repo needed — the issue is visible in the source directly.

Both regenerateTitle and regenerateDescription are async (they await a fetch), but the button onClick handlers do not track the pending state.

Payload Version

3.84.1

Environment

• @payloadcms/plugin-seo v3.84.1

Start with packages/plugin-seo/src/fields/MetaTitle/MetaTitleComponent.tsx and packages/plugin-seo/src/fields/MetaDescription/MetaDescriptionComponent.tsx. Read regenerateTitle and regenerateDescription, then trace their Auto-generate button handlers. Done means both buttons are disabled and visibly indicate loading until their async fetch completes.