fix: sound in silent mode for audio attachments

Author: khushal87

package/expo-package/src/handlers/Sound.ts

@@ -3,6 +3,9 @@ import { AudioComponent } from '../optionalDependencies/Video';
 export const Sound = {
   initializeSound: AudioComponent
     ? async (source, initialStatus, onPlaybackStatusUpdate: (playbackStatus) => void) => {
+        await AudioComponent.setAudioModeAsync({
+          playsInSilentModeIOS: true,
+        });
         const { sound } = await AudioComponent.Sound.createAsync(
           source,
           initialStatus,