add render check to check_environments_match

[Kallinteris-Andreas]

Description

updates check_environments_match to also check for that env.render() is identical

I have being using it to verify the model changes for the mujoco==3.0.0

Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• I have run the pre-commit checks with pre-commit run --all-files (see CONTRIBUTING.md instructions to set it up)
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[pseudo-rnd-thoughts]

PR looks good
Will wait for the mujoco 3.0.0 bug fix PR to be finished and merged into this PR before finally merging

[Kallinteris-Andreas]

@pseudo-rnd-thoughts re-run CI

[pseudo-rnd-thoughts]

@pseudo-rnd-thoughts re-run CI

Sorry, I can't rerun the CI, you can push an empty commit to rerun the CI in my experience. https://stackoverflow.com/questions/20138640/pushing-empty-commits-to-remote