fix: fixed flaky pipelineSearchSection test case (#5189)

frontend/src/container/PipelinePage/tests/PipelinesSearchSection.test.tsx

@@ -42,9 +42,11 @@ describe('PipelinePage container test', () => {
 		jest.advanceTimersByTime(299);
 		expect(setPipelineValue).not.toHaveBeenCalled();
 
-		// Wait for the debounce delay to pass
+		// Fast-forward time by 1ms to reach the debounce delay
+		jest.advanceTimersByTime(1);
+
+		// Wait for the debounce delay to pass and expect the callback to be called
 		await waitFor(() => {
-			// Expect the callback to be called after debounce delay
 			expect(setPipelineValue).toHaveBeenCalledWith('sample_pipeline');
 		});