As Igor Eisberg explained here (
https://xiaomi.eu/community/threads/frequently-asked-questions.73215/#post-728261) you can't update system apps in a ROM from xiaomi.eu. As far as I understand it, system apps are only updated with a new ROM version.
I can't update system apps from APK/Play Store/GetApps
You should never update non-Google system apps on our ROMs, or custom ROMs in general.
Otherwise, you'll lose the translations and modifications we apply to these apps.
This is also a measure to prevent you from false-reporting issues not related to our ROMs.
MIUI/HyperOS app updates that show up on Play Store cannot be hidden. Nothing we can do about it.
Also, GetApps is not part of our ROMs and you should not even have it installed.