Fix alpha entry point translation ref re-exports to use @alpha instead of @public

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
Made-with: Cursor

plugins/home/report-alpha.api.md

@@ -206,7 +206,7 @@ const _default: OverridableFrontendPlugin<
 >;
 export default _default;
 
-// @public @deprecated (undocumented)
+// @alpha @deprecated (undocumented)
 export const homeTranslationRef: TranslationRef<
   'home',
   {

plugins/home/src/alpha.tsx

@@ -228,7 +228,7 @@ export default createFrontendPlugin({
 import { homeTranslationRef as _homeTranslationRef } from './translation';
 
 /**
- * @public
+ * @alpha
  * @deprecated Import from `@backstage/plugin-home` instead.
  */
 export const homeTranslationRef = _homeTranslationRef;