if it is unbound and the underlying type is reference type.
If the underlying type is primitive, it is boxed and unboxed
correctly, otherwise, it is simply casted and not unboxed.
Additionally, generate functions for inliner with inline classes
in signature, so unboxing works.
The unboxing is removed after inlining.
#KT-44722 Fixed
classes, instead of MemberScope.
The primary motivation was to fix issues around type-mapping for inline
classes in FIR, which uses wrapped descriptors that have empty
MemberScopes.
Initial problem is started in `capturedBoundReferenceReceiver` method
where we assume that bound receiver is captured for usual call.
Note that if method is inline then we don't pass actual name reference
receiver, but pass special CAPTURED_RECEIVER_FIELD, which is then
is used to find special instructions during inline and fold several
instructions in `foldFieldAccessChainIfNeeded`.
As a result, we got unboxed reference receiver for inline call, which
caused CCE and to fix it we should box receiver one more time during
inline
#KT-28188 Fixed
