Do not generate stubs if there is no special bridge in the current class
- there are already Kotlin super class in hierarchy
- special bridge has the same signature as method itself
#KT-11915 Fixed
In cases when signature of special bridge is the same as current method,
but type is not 'Any?'.
Also there is tiny optimization:
only null check needed if value parameter type is mapped to Object,
but it's not nullable.
#KT-9973 Fixed
Generate special bridge even in case current class has Kotlin superclass implementing
this builtin method, but that super class was generated without special bridge
(e.g. because it would have the same signature)
#KT-9901 Fixed
Denis Zharkov