JVM_IR: IC: Unbox inline class argument of callable reference

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

compiler/testData/codegen/box/inlineClasses/callableReferences/let/stringN.kt

@@ -0,0 +1,22 @@
+inline class Value(val value: String?)
+
+object Foo {
+    fun foo(value: Value) {
+        res = value.value!!
+    }
+
+    fun bar(value: Value?) {
+        res = value?.value!!
+    }
+}
+
+var res = "FAIL"
+
+fun box(): String {
+    Value("OK").let(Foo::foo)
+    if (res != "OK") return "FAIL 1: $res"
+    res = "FAIL"
+
+    Value("OK").let(Foo::bar)
+    return res
+}