JS: move more test to box tests

js/js.translator/testData/box/multiFile/classOfTheSameNameInAnotherPackage.kt

@@ -0,0 +1,18 @@
+// FILE: A.kt
+package foo
+
+open class A() {
+    fun f() = 3
+}
+
+fun box(): String {
+    return if ((A().f() + bar.A().f()) == 9) "OK" else "fail"
+}
+
+
+// FILE: B.kt
+package bar
+
+open class A() {
+    fun f() = 6
+}