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

^KT-61259

native/native.tests/testData/framework/objcexport/kt46431.kt

@@ -0,0 +1,20 @@
+/*
+ * 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 kt43599
+
+// Based on https://youtrack.jetbrains.com/issue/KT-46431
+
+interface Host {
+    val test: String
+}
+abstract class AbstractHost : Host
+
+fun createAbstractHost(): Host {
+    return object : AbstractHost() {
+        override val test: String
+            get() = "1234"
+    }
+}