Technically, this is redundant, as the `comment_author`, `comment_author_email`, and `comment_author_url` fields are already escaped via `get_comment_to_edit()` before the form is displayed.
However, this brings some consistency with the `comment_author` and `comment_author_url` fields being escaped in the same form.
Follow-up to [11721].
Props utsav72640.
Fixes#53349.
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