React Native Android Video Call Media App -- 2

Title: Video Call Media Handling Improvements
1. Camera Interruption Handling
• When a user is in an active video call and opens another camera application, the app should pause the local video stream (similar to WhatsApp behavior).
• Other participants should see a "Video Paused" state/indicator instead of a black screen.
• When the user returns to the app and camera access is restored, video streaming should resume automatically.
2. SIM Call Handling in Background
• When a cellular (SIM) call is received during an active app call, the app should place the ongoing call on hold and notify all participants.
• This functionality currently works only when the app is in the foreground.
• Extend the same behavior to work reliably when the app is in the background.
3. Screen Sharing - First-Time Launch Issue
• Screen sharing does not work on the first attempt after a fresh app installation.
• When a user starts screen sharing for the first time, other participants see a black screen instead of the shared content.
• If screen sharing is stopped and started again, it works correctly without any issues.
• Investigate and fix the first-time screen sharing initialization flow so that screen sharing works successfully on the very first attempt after app installation.