Fix mapping of nullable generic underlying types of inline classes

#KT-32162 Fixed

compiler/testData/codegen/box/inlineClasses/kt44701_jvmOverloadsGeneric2.kt

@@ -0,0 +1,10 @@
+// TARGET_BACKEND: JVM
+// IGNORE_BACKEND: JVM
+// WITH_STDLIB
+// WORKS_WHEN_VALUE_CLASS
+// LANGUAGE: +ValueClasses, +GenericInlineClassParameter
+
+OPTIONAL_JVM_INLINE_ANNOTATION
+value class Location <T : String> @JvmOverloads constructor(val value: T? = "OK" as T)
+
+fun box(): String = Location<String>().value!!