[KSP2] Resolver.mapToJvmSignature() is not consistent

[kuanyingchou]

I'm getting inconsistent results when calling Resolver.mapToJvmSignature() on inline value classes. It always returns the underlying type in KSP1, but it sometimes returns the wrapper type in KSP2.

Repro: kuanyingchou@5746554

In the repro It returns different results for f's return type before and after another mapToJvmSignature call:

before: f: LMyInlineClass;
after: f: I