Minor. Add more tests

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

@@ -0,0 +1,26 @@
+// WITH_STDLIB
+// WORKS_WHEN_VALUE_CLASS
+// LANGUAGE: +ValueClasses, +GenericInlineClassParameter
+// MODULE: lib
+// FILE: lib.kt
+
+OPTIONAL_JVM_INLINE_ANNOTATION
+value class Z<T> private constructor(private val value: T) {
+    fun result(): String = value as String
+
+    companion object {
+        fun create(value: Any?): Z<Any?> = Z(value)
+    }
+}
+
+fun interface IFoo<T> {
+    fun foo(x: T): String
+}
+
+fun foo1(fs: IFoo<Z<Any?>>) = fs.foo(Z.create("OK"))
+
+// MODULE: main(lib)
+// FILE: main.kt
+
+fun box(): String =
+    foo1 { it.result() }