[KT-4124] Add test case for nested native class

js/js.translator/testData/nestedTypes/cases/nestedNative.kt

@@ -0,0 +1,16 @@
+package foo
+
+open class A {
+    @native class B(value: Int = 0) {
+        val foo: Int
+            get() = noImpl
+        fun bar(): Int = noImpl
+    }
+}
+
+fun box(): String {
+    var b = A.B(23)
+    if (b.foo != 123) return "failed1: ${b.foo}"
+    if (b.bar() != 1123) return "failed2: ${b.bar()}"
+    return "OK"
+}

js/js.translator/testData/nestedTypes/native/nestedNative.js

@@ -0,0 +1,7 @@
+function B(value) {
+    this.foo = 100 + value;
+}
+B.prototype = {};
+B.prototype.bar = function() {
+    return this.foo + 1000;
+};