When we have a situation like this: https://integration.moodle.org/job/Precheck%20remote%20branch/27528/artifact/work/smurf.html#grunt

It's not clear that grunt ignorefiles needs to be run and committed https://docs.moodle.org/dev/Third_Party_Libraries

(Ideally this would be in the thirdpartylibs check.. but it was put in the grunt part for convenience)