Changing "task_name" using RunConfig with different task does not work through Hydra CLI.

[geiko246]

Reproduce problem:

python scripts/train_rl.py --headless -r RSS_DRIFT_CONFIG env_setup.task_name="Isaac-MushrVisualRL-v0" env.rewards.traversablility=10

Hydra is unable to change the traversablility reward weight because the env config corresponding to the RSS_DRIFT_CONFIG ("Isaac-MushrDriftRL-v0") was registered under the run, not the CLI task environment.

A current workaround is to define a new RunConfig with the desired task_name.