Strange unreprodusable crash only on Samsung devices

[Izya Pitersky]

Hello!

I recently noted strange crash in firebase that started appearing only on Samsung devices since this September. Although I've added support of these flags a year ago, it happens again and again (and I can't reproduce it on my Samsung devices, but I can see the crash in the Firebase console)

Fatal Exception: java.lang.IllegalArgumentException

app: Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent. Strongly consider using FLAG_IMMUTABLE, only use FLAG_MUTABLE if some functionality depends on the PendingIntent being mutable, e.g. if it needs to be used with inline replies or bubbles