Report a separate error when class files compiled with FIR are in
dependencies, in addition to the one for class files compiled with FE
1.0 + JVM IR.
#KT-43592
Introduce an enum DeserializedContainerAbiStability with two values.
This is needed in order to support another reason for ABI instability in
a subsequent commit, namely "unstable because compiled by FIR".
#KT-43592