chore: mount project-level context API unconditionally (#11258)

The mounting was originally wrapped in a flag check, but this means that
the flag has to be enabled at startup for the routes to get mounted.
This, in turn, means that if you enable the flag after startup, the Ui
will start trying to call the project-level API, but not get any results
because the routes are not mounted.

The API is still marked as beta, so this can be rolled back if we want
to.

Author: thomasheartman

src/lib/features/project/project-controller.ts

@@ -211,13 +211,10 @@ export default class ProjectController extends Controller {
         this.use('/', new ProjectStatusController(config, services).router);
         this.use('/', new FeatureLifecycleController(config, services).router);
         this.use('/', new FeatureLinkController(config, services).router);
-
-        if (this.flagResolver.isEnabled('projectContextFields')) {
-            this.use(
-                '/',
-                new ContextController(config, services, 'project').router,
-            );
-        }
+        this.use(
+            '/',
+            new ContextController(config, services, 'project').router,
+        );
     }
 
     async getProjects(