Camera frozen when putting app in background for a while and go back

[tuan-jason]

Describe the bug
Front camera is frozen after putting app in background for a while (~1 min) then putting it back in foreground

To Reproduce
Steps to reproduce the behavior:

1. Connect to a LiveKit room.
2. Publish a local video track using self-created CameraCapturer and show it in a TextureViewRenderer
3. Put app in background after making sure front camera view is displaying properly
4. Open the app again after a while (1-2 mins) (or to be exact, when you can see the below logcat exception) and observe the front camera view.

Camera2Session: Error: Camera device could not be opened due to a device policy.
Camera2Session: Stop internal
Session 0: Exception while stopping repeating: (Ask Gemini)
android.hardware.camera2.CameraAccessException: CAMERA_ERROR (3): The camera device has encountered a serious error
at android.hardware.camera2.impl.CameraDeviceImpl.checkIfCameraClosedOrInError(CameraDeviceImpl.java:2429)
at android.hardware.camera2.impl.CameraDeviceImpl.stopRepeating(CameraDeviceImpl.java:1329)
at android.hardware.camera2.impl.CameraCaptureSessionImpl.close(CameraCaptureSessionImpl.java:579)
at livekit.org.webrtc.Camera2Session.stopInternal(Camera2Session.java:384)
at livekit.org.webrtc.Camera2Session.reportError(Camera2Session.java:405)
at livekit.org.webrtc.Camera2Session.-$$Nest$mreportError(Unknown Source:0)
at livekit.org.webrtc.Camera2Session$CameraStateCallback.onError(Camera2Session.java:110)
at android.hardware.camera2.impl.CameraDeviceImpl.notifyError(CameraDeviceImpl.java:1809)
at android.hardware.camera2.impl.CameraDeviceImpl.$r8$lambda$KBQCqQRdhVVn7uHI9Xdha6OqnsU(Unknown Source:0)
at android.hardware.camera2.impl.CameraDeviceImpl$$ExternalSyntheticLambda0.accept(Unknown Source:8)
at com.android.internal.util.function.pooled.PooledLambdaImpl.doInvoke(PooledLambdaImpl.java:281)
at com.android.internal.util.function.pooled.PooledLambdaImpl.invoke(PooledLambdaImpl.java:204)
at com.android.internal.util.function.pooled.OmniFunction.run(OmniFunction.java:97)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:201)
at android.os.Looper.loop(Looper.java:288)
at android.os.HandlerThread.run(HandlerThread.java:67)

Expected behavior
Camera frames should not be frozen

Device Info:

• Device: Google Pixel 3a
• OS: Android 12
• LiveKit SDK version: 2.10.0 (exactly at this commit in main branch: db34adb)

Bug report

We shared via direct message in Slack to @davidliu due to potentially sensitive information.

Patch file to recreate issue
Reproduce_a_camera_frozen_issue.patch