# Description

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Adds a cleanup of remaining async events in the Mimic data generation
code. The cleanup cancels remaining events after the environment is
closed and prior to sim app shutdown. This prevents left over events
from trying to use the env after it is closed.

## Type of change

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- 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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