Chrome dropped one of the eMudhra roots. The problem is that the weak eMudhra intermediates were cross-signed by Sectigo. ~~Browsers (at least Chrome) didn’t drop the Sectigo root, instead they store a revokation for the cross-signature.~~ (edit: this is wrong, see josephcsible’s answer below)

Dropping the Sectigo root along with the eMudhra root is the easy and safe solution, but it means that some small percentage of certificates that are fine won’t be accepted.