Done in T271958 please review.

Change #1074721 had a related patch set uploaded (by Eccenux; author: Eccenux):

[css-sanitizer@master] Support for CSS Box Sizing Level 4

https://gerrit.wikimedia.org/r/1074721

As suggested by Tim Starling in the code review, I added more properties:

• contain-intrinsic-* (block-size, inline-size) https://drafts.csswg.org/css-sizing-4/#intrinsic-size-override
• min-intrinsic-sizing property https://drafts.csswg.org/css-sizing-4/#intrinsic-contribution-override

So everything should be in accordance with the latest draft of the specification and should be more future-proof.

Still waiting for the final go/no-go, but I've rebased my commits, so it should be good to go.

Change #1074721 merged by jenkins-bot:

[css-sanitizer@master] Support for CSS Box Sizing Level 4 (as seen in draft from 2025-02-24)

https://gerrit.wikimedia.org/r/1074721

The fix was merged in March but it still needs to be released and updated in TemplateStyles.