Suport camera group ids for batch rendering on RT backend

[yuecideng]

Description

Support group id control for RT batch rendering, which makes it more flexible to start/stop camera render pipeline.

TODO:

• This PR needs upgraded dexsim version.

Type of change

• Enhancement (non-breaking change which improves an existing functionality)

Checklist

• I have run the black . command to format the code base.
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• Dependencies have been updated, if applicable.

[Copilot]

Pull request overview

Adds support for controlling which RT camera groups are rendered during batched environment observation collection, enabling more flexible start/stop of camera rendering pipelines.

Changes:

• Extend SimulationManager.render_camera_group to accept explicit group_ids and route them to the DexSim world RT renderer.
• Track camera group IDs in BaseEnv (and from the record manager camera) and use them for RT batched rendering before sensor fetch.
• Add an RT-enabled embodied env test case and bump dexsim_engine to 0.3.10.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
embodichain/lab/sim/sim_manager.py	Changes RT render API to accept camera group IDs and forwards them to DexSim.
embodichain/lab/sim/sensors/camera.py	Exposes Camera.group_id for RT camera-group identification.
embodichain/lab/gym/envs/base_env.py	Collects camera group IDs and uses them for RT batch rendering prior to sensor data fetch.
embodichain/lab/gym/envs/managers/record.py	Registers the recording camera’s group ID with the environment to include it in batch rendering.
tests/gym/envs/test_embodied_env.py	Adds a CPU RT test variant exercising the RT-enabled path.
pyproject.toml	Bumps dexsim_engine version pin.

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