KT-12275 Add JS optimization that transforms the following code

```
do {
    guard: {
        // do something
        break guard;
        // do something
    }
} while (condition)
```

to

```
do {
    // do something
    continue;
    // do something
} while (condition)
```

js/js.translator/testData/js-optimizer/do-while-guard-elimination/simple.optimized.js

@@ -0,0 +1,15 @@
+function box() {
+    var i = 0;
+    var sum = 0;
+    do {
+        i++;
+        if (i == 5) {
+            continue;
+        }
+        sum += i;
+    } while (i < 10);
+
+    if (sum != 50) return "fail: " + sum;
+
+    return "OK";
+}