[K/N][Tests] Migrate framework and objcexport tests

^KT-61259

native/native.tests/testData/framework/kt57791/kt57791.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+interface Foo {
+    fun bar(): String?
+}
+
+internal class FooImplUnused : Foo {
+    override fun bar(): String? = null
+}
+
+fun foobar(foo: Foo): Boolean {
+    val s = foo.bar()
+    if (s == null)
+        return false
+    return s == "zzz"
+}