Store entire Config struct on collab AppState

crates/collab/src/integration_tests.rs

@@ -6357,8 +6357,7 @@ impl TestServer {
     async fn build_app_state(test_db: &TestDb) -> Arc<AppState> {
         Arc::new(AppState {
             db: test_db.db().clone(),
-            api_token: Default::default(),
-            invite_link_prefix: Default::default(),
+            config: Default::default(),
         })
     }