plugins: updates to convert legacy route refs to new system

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

plugins/search/src/alpha.tsx

@@ -28,7 +28,6 @@ import {
   useSidebarPinState,
 } from '@backstage/core-components';
 import {
-  createRouteRef,
   useApi,
   DiscoveryApi,
   IdentityApi,
@@ -64,9 +63,11 @@ import { SearchResult } from '@backstage/plugin-search-common';
 import { searchApiRef } from '@backstage/plugin-search-react';
 import { searchResultItemExtensionData } from '@backstage/plugin-search-react/alpha';
 
+import { rootRouteRef } from './plugin';
 import { SearchClient } from './apis';
 import { SearchType } from './components/SearchType';
 import { UrlUpdater } from './components/SearchPage/SearchPage';
+import { convertLegacyRouteRef } from '@backstage/core-plugin-api/alpha';
 
 /** @alpha */
 export const SearchApi = createApiExtension({
@@ -95,12 +96,10 @@ const useSearchPageStyles = makeStyles((theme: Theme) => ({
   },
 }));
 
-const searchRouteRef = createRouteRef({ id: 'plugin.search.page' });
-
 /** @alpha */
 export const SearchPage = createPageExtension({
   id: 'plugin.search.page',
-  routeRef: searchRouteRef,
+  routeRef: convertLegacyRouteRef(rootRouteRef),
   configSchema: createSchemaFromZod(z =>
     z.object({
       path: z.string().default('/search'),
@@ -237,7 +236,7 @@ export const SearchPage = createPageExtension({
 /** @alpha */
 export const SearchNavItem = createNavItemExtension({
   id: 'plugin.search.nav.index',
-  routeRef: searchRouteRef,
+  routeRef: convertLegacyRouteRef(rootRouteRef),
   title: 'Search',
   icon: SearchIcon,
 });
@@ -246,4 +245,7 @@ export const SearchNavItem = createNavItemExtension({
 export default createPlugin({
   id: 'plugin.search',
   extensions: [SearchApi, SearchPage, SearchNavItem],
+  routes: {
+    root: convertLegacyRouteRef(rootRouteRef),
+  },
 });