Fix scheduler-orchestrator spec to use SCHEDULER_API mock

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/Web/StellaOps.Web/src/tests/scheduler_ops/scheduler-orchestrator-ops-ui.behavior.spec.ts

@@ -123,12 +123,7 @@ describe('scheduler-orchestrator-ops-ui behavior', () => {
         imports: [SchedulerRunsComponent],
         providers: [
           provideRouter([]),
-          {
-            provide: HttpClient,
-            useValue: {
-              get: () => of([]),
-            },
-          },
+          { provide: SCHEDULER_API, useValue: createSchedulerApiMock() },
         ],
       }).compileComponents();