Why the same extrinsics are assigned for color and depth streams while creating actual_image_stream_config?

[nrasulnrasul]

Why the same extrinsics are assigned for color and depth streams while creating rs::core::video_module_interface::actual_image_stream_config. I expect identity rotation and zero translation for depth stream because these extrinsics are w.r.t depth frame.

Ros2RealSenseSdkConverter::CreateSdkModuleConfig, line 118