Fix generic signature for KFunctionN types on JVM

#KT-15473 Fixed

compiler/testData/compileJavaAgainstKotlin/callableReference/GenericSignature.kt

@@ -0,0 +1,9 @@
+// KT-15473 Invalid KFunction byte code signature for callable references
+
+package test
+
+class Request(val id: Long)
+
+open class Foo {
+    open fun request() = ::Request
+}