Fixes env error in record_demos script (#220)

# Description

Fixes the "'OrderEnforcing' object has no attribute 'device'" error by
using env.unwrapped.

## Type of change

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applicable. -->

- Bug fix (non-breaking change which fixes an issue)

## Checklist

- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] I have updated the changelog and the corresponding version in the
extension's `config/extension.toml` file
- [ ] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there

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scripts/tools/record_demos.py

@@ -178,7 +178,9 @@ def main():
             # get keyboard command
             delta_pose, gripper_command = teleop_interface.advance()
             # convert to torch
-            delta_pose = torch.tensor(delta_pose, dtype=torch.float, device=env.device).repeat(env.num_envs, 1)
+            delta_pose = torch.tensor(delta_pose, dtype=torch.float, device=env.unwrapped.device).repeat(
+                env.unwrapped.num_envs, 1
+            )
             # compute actions based on environment
             actions = pre_process_actions(delta_pose, gripper_command)