WebXR Client UI page can't be used after disconnection

[jiwenc-nv]

see bug description ⬇️

[farbod-nv]

Describe the bug
Cannot connect to the runtime session after disconnecting in cloudxrjs web app.

To reproduce
Steps to reproduce the behavior:

1. ./run_cloudxr_via_docker.sh
2. Run camera_streaming app.
3. Connect via web client
4. Disconnect via the web client UI.
5. Re-connect

Expected behavior
Successful reconnection with the running session.

Observed behavior
Empty Webxr immersive space

Platforms

• Isaac Teleop Version: main
• OS: ubuntux86
• Integrations: camerastreaming
• XR Device: Pico 4U