Hi Ishan,
I'm Sumit, here to answer your query at the Microsoft Community.
The feature is described here:
Ability to use a mobile device’s camera as a webcam on your PC begins rolling out to Windows Insiders
https://blogs.windows.com/windows-insider/2024/...
To disable the Camera, go to Settings > Bluetooth and Devices > Mobile devices > Manage Devices > Use as connected Camera to off.
Hope that helps, and rely on us for any further inquiries. All the best.