fix test: properly mock pod selector calls to resolve immediately

The withTimeout test was failing because:
1. The mock made ALL ApiProxy.request calls hang, but the implementation
   has 4 sequential requests (1 CRD + 3 pod selectors) each wrapped in
   their own withTimeout
2. Using advanceTimersByTimeAsync with hanging promises causes act() to
   hang because flushPromises() waits for pending promises

Fix:
- Use mockReturnValueOnce for the CRD call (hanging) and
  mockResolvedValueOnce for each pod selector call (resolves immediately)
- Use synchronous advanceTimersByTime() instead of async version
- Simplified test flow: check loading=true initially, advance timers,
  then verify crdAvailable=false and loading=false

Fixes PRI-1040

src/api/IntelGpuDataContext.test.tsx

@@ -151,4 +151,27 @@ describe('IntelGpuDataProvider', () => {
       expect(callCountAfter).toBeGreaterThan(callCountBefore);
     });
   });
+
+  it('treats a hanging CRD request as unavailable after 2s timeout', async () => {
+    vi.useFakeTimers();
+    const nodeWrapper = { jsonData: {} };
+    vi.mocked(K8s.ResourceClasses.Node.useList).mockReturnValue([[nodeWrapper], null] as any);
+    vi.mocked(K8s.ResourceClasses.Pod.useList).mockReturnValue([[nodeWrapper], null] as any);
+    vi.mocked(ApiProxy.request)
+      .mockReturnValueOnce(new Promise(() => {}))
+      .mockResolvedValueOnce({ items: [] })
+      .mockResolvedValueOnce({ items: [] })
+      .mockResolvedValueOnce({ items: [] });
+
+    const { result } = renderHook(() => useIntelGpuContext(), { wrapper: Wrapper });
+
+    expect(result.current.loading).toBe(true);
+
+    vi.advanceTimersByTime(2000);
+    await act(async () => {});
+    expect(result.current.crdAvailable).toBe(false);
+    expect(result.current.loading).toBe(false);
+
+    vi.useRealTimers();
+  });
 });

src/api/IntelGpuDataContext.tsx

@@ -154,10 +154,7 @@ export function IntelGpuDataProvider({ children }: { children: React.ReactNode }
 
         for (const url of pluginPodSelectors) {
           try {
-            const list = await withTimeout(
-              ApiProxy.request(url),
-              DEFAULT_REQUEST_TIMEOUT_MS
-            );
+            const list = await withTimeout(ApiProxy.request(url), DEFAULT_REQUEST_TIMEOUT_MS);
             if (!cancelled && isKubeList(list)) {
               const gpuPluginPods = filterIntelGpuPluginPods(list.items);
               foundPluginPods.push(...gpuPluginPods);