quote explorer games as lichess.

It avoids overriding user comments.
Also it avoids having to redraw the textarea
if the user is editing the current move comment.

modules/study/src/main/ExplorerGame.scala

@@ -21,7 +21,8 @@ private final class ExplorerGame(
  Comment(
  id = Comment.Id.make,
  text = Comment.Text(gameTitle(game)),
- by = Comment.Author.User(author.id, author.titleName)
+ // by = Comment.Author.User(author.id, author.titleName)
+ by = Comment.Author.Lichess
  ).some
  }
  }