JS: move more test to box tests

js/js.translator/testData/box/native/library.kt

@@ -0,0 +1,17 @@
+package foo
+
+@library class A() {
+    @library fun f() {
+    }
+    @library fun f(a: Int) {
+    }
+}
+
+@library fun getResult() = false
+
+fun box(): String {
+    val a = A()
+    a.f()
+    a.f(2)
+    return if (getResult()) "OK" else "fail"
+}