[KSP2] getSymbolsWithAnnotation() doesn't work if the annotation is an alias in KOTLIN_LIB

[kuanyingchou]

This may be related to #1676 and Dagger's google/dagger#4356.

getSymbolsWithAnnotation() doesn't work with typealiases defined in KOTLIN_LIB in KSP2 while it was working in KSP1. Symbols annotated with an alias are missing when calling getSymbolsWithAnnotation(underlying_type) and nothing is returned when calling getSymbolsWithAnnotation(alias). Not sure if it's part of behavior change 3: Resolving references to type aliases in function types and annotations.

Repro: kuanyingchou@34ab22a