fix: await setRecordingState before muxNativeWindowsRecording

The cursor telemetry snapshot (setRecordingState(false)) was not awaited,
creating a race with muxNativeWindowsRecording which calls finalizeStoredVideo.
If the mux IPC arrived first, pendingCursorSamples was still empty and no
.cursor.json was written — causing the cursor overlay to not render.

src/hooks/useScreenRecorder.ts

@@ -479,7 +479,7 @@ export function useScreenRecorder(): UseScreenRecorderReturn {
         nativeWindowsRecording.current = false;
 
         const result = await window.electronAPI.stopNativeScreenRecording();
-        window.electronAPI?.setRecordingState(false);
+        await window.electronAPI?.setRecordingState(false);
 
         if (!result.success || !result.path) {
           console.error("Failed to stop native screen recording:", result.error ?? result.message);