Adds assertion to catch Nans in pink

[alexmillane]

Description

Tests the solution to pink IK for Nans. Falls back to doing nothing in the case it finds some. This restores the behaviour of Lab 2.3 (tolerance to failed IK).

Fixes # (issue)

Fixes the issue that the Isaac Lab process hangs (requiring kill -9) in the case of failed IK.

Type of change

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

Screenshots

NA

Checklist

• I have read and understood the contribution guidelines
• I have run the pre-commit checks with ./isaaclab.sh --format
• 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
• 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

[greptile-apps]

Too many files changed for review. (882 files found, 100 file limit)

[github-actions]

Test Results Summary

3 815 tests   3 221 ✅  3h 6m 10s ⏱️
  136 suites    559 💤
    1 files       12 ❌  23 🔥

For more details on these failures and errors, see this check.

Results for commit bd3ac8f.

[AntoineRichard]

This is needed somehow now.

[kellyguo11]

@michaellin6 are you good with this change?