`end new` for anonymous classes doesn't work under some conditions

## Compiler version

v3.7.3

## Minimized code

```scala
//> using scala 3.7.4
trait Foo
val foo = 
  new Foo:
    // comment
  end new

val foo2 = 
  new Foo:
  end new

@main def test = {}
```

## Output

```scala
misaligned end marker errors
```

## Expectation
No error.