fix(mobile): migrate expo-av to expo-video and expo-audio

expo-av has no SDK 56 compatible release, and its EXEventEmitter.h
interface was removed from expo-modules-core, so the iOS release
archive fails compiling Pods/EXAV. Move video playback to
expo-video's useVideoPlayer/VideoView, and audio playback and
recording to expo-audio's createAudioPlayer/AudioModule.AudioRecorder,
preserving existing controls, mute/loop/resize behavior, and the
recording audio session configuration.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

apps/mobile/package.json

@@ -52,7 +52,7 @@
     "expo": "^56.0.0",
     "expo-apple-authentication": "~56.0.4",
     "expo-asset": "~56.0.24",
-    "expo-av": "~16.0.8",
+    "expo-audio": "~56.0.13",
     "expo-blur": "~56.0.4",
     "expo-build-properties": "~56.0.27",
     "expo-clipboard": "~56.0.4",
@@ -76,6 +76,7 @@
     "expo-status-bar": "~56.0.4",
     "expo-system-ui": "~56.0.5",
     "expo-updates": "~56.0.26",
+    "expo-video": "~56.1.4",
     "react": "19.2.3",
     "react-dom": "19.2.3",
     "react-native": "0.85.3",