JS: move more test to box tests

js/js.translator/testData/box/propertyAccess/classUsesPackageProperties.kt

@@ -0,0 +1,17 @@
+package foo
+
+var a = 0
+
+class A() {
+    init {
+        a++
+    }
+
+}
+
+fun box(): String {
+    var c = A()
+    c = A()
+    c = A()
+    return if (a == 3) "OK" else "fail: $a"
+}