backend/tests: Add blackbox tests from Kotlin JVM

Added tests from testData/codegen/box directory. There are blackbox tests
in other directories and they are to be added.

backend.native/tests/external/codegen/blackbox/innerNested/protectedNestedClassFromJava.kt

@@ -0,0 +1,34 @@
+// See KT-8269 java.lang.IllegalAccessError on accessing protected inner class declared in Kotlin super class
+// TARGET_BACKEND: JVM
+// FILE: Test.kt
+
+package com.company
+
+import other.JavaClass
+
+open class Test {
+    protected class ProtectedClass
+}
+
+fun box(): String {
+    JavaClass.test()
+    return "OK"
+}
+
+// FILE: other/JavaClass.java
+
+package other;
+
+import com.company.Test;
+
+public class JavaClass {
+    static class JavaTest extends Test {
+        public static boolean foo(Object obj) {
+            return obj instanceof ProtectedClass;
+        }
+    }
+
+    public static void test() {
+        JavaTest.foo(new Object());
+    }
+}