JS: move expressions test to box tests

js/js.translator/testData/box/expression/evaluationOrder/dangerousInsideDangerous.kt

@@ -0,0 +1,22 @@
+package foo
+
+fun box(): String {
+    if (f(0) != 201) {
+        return "fail1"
+    }
+    if (f(1) != 104) {
+        return "fail2"
+    }
+    if (f(-2) != -100) {
+        return "fail3"
+    }
+    return "OK"
+}
+
+fun f(i: Int): Int {
+    var j = i
+    return ++j + if (j != 1) {
+        (if (j > 0) 100 else return -100) + 2
+    }
+    else 200
+}