chore(pronto): don't mute but set a quite low volume

When Pronto runs in a sandboxed mode of Chrome, with puppeteer, the audio track doesn't produce any frames when `video.muted = true`.

Instead, we keep in unmuted, but we set quite a low volume. This fixes the issue and is a good tradeoff :)

Author: oliverlaz

sample-apps/react/react-dogfood/components/RemoteFilePublisher.tsx

@@ -28,7 +28,8 @@ export const publishRemoteFile = async (
 ): Promise<RemoteFilePublisher> => {
   const videoElement = document.createElement('video');
   videoElement.crossOrigin = 'anonymous';
-  videoElement.muted = true;
+  // videoElement.muted = true;
+  videoElement.volume = 0.001; // otherwise, it doesn't work with puppeteer
   videoElement.autoplay = true;
   videoElement.loop = true;
   videoElement.src = videoFileUrl;