chore: app runs correctly 🎉

Co-authored-by: Fredrik Adelöw <freben@gmail.com>
Co-authored-by: Patrik Oldsberg <poldsberg@gmail.com>
Co-authored-by: Johan Haals <johan.haals@gmail.com>
Signed-off-by: blam <ben@blam.sh>

packages/app-next/package.json

@@ -24,6 +24,7 @@
     "@backstage/frontend-plugin-api": "workspace:^",
     "@backstage/integration-react": "workspace:^",
     "@backstage/plugin-api-docs": "workspace:^",
+    "@backstage/plugin-app": "workspace:^",
     "@backstage/plugin-app-visualizer": "workspace:^",
     "@backstage/plugin-auth-react": "workspace:^",
     "@backstage/plugin-catalog": "workspace:^",