fix: ensure vue_app catch-all is matched before legacy controllers

Move vue_app before controllers in routes.yaml AND keep priority:1.
Using both guarantees Symfony matches the Vue SPA catch-all first
regardless of how the router compiles equal-priority routes.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

config/routes.yaml

@@ -1,9 +1,3 @@
-controllers:
-    resource:
-        path: ../src/Controller/
-        namespace: App\Controller
-    type: attribute
-
 vue_app:
     path: /{req}
     controller: Symfony\Bundle\FrameworkBundle\Controller\TemplateController
@@ -13,3 +7,9 @@ vue_app:
     requirements:
         req: "^(?!api/|legacy).*"
     priority: 1
+
+controllers:
+    resource:
+        path: ../src/Controller/
+        namespace: App\Controller
+    type: attribute