CSS FR UOM not understood by linting

[Foxgluvs]

Current behavior

CSS grid facilitates FR unit but thelinting in Snippets for CSS is complaining it is an error.
Example: .blablabla { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr); }

Expected behavior

It should not linter complain about the use of FR units.

Steps to reproduce

Enter a CSS style entry such as .blablabla { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr); }
and see the error in the Snippets editor about it.

WordPress version

6.9.4

Code Snippets version

3.9.6 Pro

Code Snippets license

Pro

Anything else?

No response