This way, even if the whole qualifier is not selected, but some of its
parts are, the reference shortener will correctly find and shorten
those parts
^KTIJ-28080 Fixed
Utilize `FirSamResolver` to obtain the potential SAM constructor
from the classifier
Also, accept K2_SYNTHETIC_RESOLVED in the `resolveUnqualifiedAccess`,
since this is the kind of resolve success which corresponds to the
SAM constructor call resolution
^KTIJ-28167 Fixed
Roman Golyshev