Rename comment to description in profile's selector message

[jhrozek]

Summary

Description plays better with the FE.

Related: #3722

Change Type

• Bug fix (resolves an issue without affecting existing features)
• Feature (adds new functionality without breaking changes)
• Breaking change (may impact existing functionalities or require documentation updates)
• Documentation (updates or additions to documentation)
• Refactoring or test improvements (no bug fixes or new functionality)

Testing

N/A

Review Checklist:

• Reviewed my own code for quality and clarity.
• Added comments to complex or tricky code sections.
• Updated any affected documentation.
• Included tests that validate the fix or feature.
• Checked that related changes are merged.

[rdimitrov]

There are quite a few failing checks, are we sure there isn't something to fix?

[jhrozek]

There are quite a few failing checks, are we sure there isn't something to fix?

Yes, I apologize. There were some utility functions that were using the old field. But I still think it's OK to rename the field in a backwards-compatible manner because we never implemented the handlers that would let you create selectors.

[coveralls]

coverage: 54.389% (-0.004%) from 54.393%
when pulling 8f7a635 on jhrozek:rename_sel_comment
into 8a27510 on stacklok:main.