There are a plenty of topics related with this issue generated by Google on this forum.
The idea is: this issue appear too often than the team is releasing new ROMs, because of that there are new stable releases without any fix for Google Play Integrity, instead the fix should be applied manually by the user using Magisk with Play Integrity Fix module.
For more details check other general discussions areas:
Bugs,
Mi General and
MIUI 14 STABLE RELEASE topic.