JS: move more test to box tests

js/js.translator/testData/box/objectDeclaration/objectInMethod.kt

@@ -0,0 +1,12 @@
+package foo
+
+class A() {
+    fun f(): String {
+        val z = object {
+            val c = "OK"
+        }
+        return z.c
+    }
+}
+
+fun box() = A().f();