Fix reflection on reference to generic property

See a93484b457 for the similar fix to function
references

 #KT-12967 Fixed

compiler/backend/src/org/jetbrains/kotlin/codegen/PropertyReferenceCodegen.kt

@@ -228,7 +228,7 @@ class PropertyReferenceCodegen(
                         initialize(property.type)
                     }
 
-            val method = state.typeMapper.mapAsmMethod(getter)
+            val method = state.typeMapper.mapAsmMethod(getter.original)
             return method.name + method.descriptor
         }