Currently FirThisReceiverExpression of instance methods are translated
to references of the class' thisReceiver,
not the method's dispatch receiver,
which causes problems with IrFrameMap::typeOf,
as the class' thisReceiver is not in the typeMap.
This commit translates non-qualified "this" references of
instance methods to references of the methods' dispatch receiver.
Use the same instances from class declaration instead
Otherwise, primary constructor value parameter types when used
in the class body are considered as different from types
based on the class type parameters
See the test genericConstructors.kt, before this commit
"id" call was reported in inapplicable
Mikhail Glukhikh