fix: flaky focus test on Windows by waiting for debounce timer

The test 'does not grab focus when follow-up question presented' was
failing intermittently on Windows because the 50ms debounced focus
effect in ChatView could fire after mockFocus.mockClear() was called.

Added explicit delays (100ms) after state changes to ensure the
debounced effect completes before clearing mocks or making assertions.
This eliminates the race condition that caused the test to pass on
Ubuntu but fail on Windows.

Author: hannesrudolph

webview-ui/src/components/chat/__tests__/ChatView.spec.tsx

@@ -468,7 +468,11 @@ describe("ChatView - Focus Grabbing Tests", () => {
 			expect(getByTestId("chat-textarea")).toBeInTheDocument()
 		})
 
-		// Clear any initial calls after state has settled
+		// Wait for the debounced focus effect (50ms) to complete.
+		// This prevents race conditions where the debounce timer fires after mockClear.
+		await new Promise((resolve) => setTimeout(resolve, 100))
+
+		// Clear any initial calls after state has fully settled (including debounced effects)
 		mockFocus.mockClear()
 
 		// Add follow-up question
@@ -494,6 +498,9 @@ describe("ChatView - Focus Grabbing Tests", () => {
 			expect(getByTestId("chat-textarea")).toBeInTheDocument()
 		})
 
+		// Wait for any debounced effects to fire
+		await new Promise((resolve) => setTimeout(resolve, 100))
+
 		// Should not grab focus for follow-up questions
 		expect(mockFocus).not.toHaveBeenCalled()
 	})