Comments duplicated when formatting for..of loop

In 13.0.0-alpha.4
```rescript
let a = [1, 2, 3]

for x of a {
  // A
  Console.log(x)
}
```

reformats to

```res
let a = [1, 2, 3]

for x of a {
// A
  // A
  Console.log(x)
}
```

which again reformats to

```r es
let a = [1, 2, 3]

for x of a {
// A
// A
  // A
  // A
  Console.log(x)
}
```