[IR] Fix for https://youtrack.jetbrains.com/issue/KT-44799

kotlin-native/backend.native/tests/codegen/funInterface/implIsNotFunction.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+package codegen.funInterface.implIsNotFunction
+
+import kotlin.test.*
+
+fun interface Foo {
+    fun invoke(): String
+}
+
+fun foo(f: Foo) = f is Function<*>
+
+@Test
+fun test() {
+    assertFalse(foo { "zzz" })
+}