JS: move expressions test to box tests

js/js.translator/testData/box/expression/misc/KT-1361-1.kt

@@ -0,0 +1,21 @@
+package foo
+
+class B {
+    val d = "OK"
+
+    fun f(): String {
+        val c = object {
+            fun foo(): String {
+                return d
+            }
+            fun boo(): String {
+                return foo()
+            }
+        }
+        return c.boo()
+    }
+}
+
+fun box(): String {
+    return B().f()
+}