catalog: add missing unregisterRedirect external router to alpha

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

.changeset/slow-trees-warn.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-catalog': patch
+---
+
+Updated alpha plugin to include the `unregisterRedirect` external route.

plugins/catalog/alpha-api-report.md

@@ -50,6 +50,7 @@ const _default: BackstagePlugin<
       },
       true
     >;
+    unregisterRedirect: ExternalRouteRef<undefined, true>;
   }
 >;
 export default _default;

plugins/catalog/src/alpha/plugin.tsx

@@ -22,6 +22,7 @@ import { entityRouteRef } from '@backstage/plugin-catalog-react';
 import {
   createComponentRouteRef,
   createFromTemplateRouteRef,
+  unregisterRedirectRouteRef,
   rootRouteRef,
   viewTechDocRouteRef,
 } from '../routes';
@@ -45,6 +46,7 @@ export default createPlugin({
     viewTechDoc: convertLegacyRouteRef(viewTechDocRouteRef),
     createComponent: convertLegacyRouteRef(createComponentRouteRef),
     createFromTemplate: convertLegacyRouteRef(createFromTemplateRouteRef),
+    unregisterRedirect: convertLegacyRouteRef(unregisterRedirectRouteRef),
   },
   extensions: [
     ...apis,