Fix comment form e2e test (#6815)
This fixes the test in question erroneously failing due to a different `markdown-text-editor` present elsewhere (in this case, hidden in the "finish review" dropdown).
Having more than one comment form uncommanded would likely be a bug, so adding that selector instead of an ID.
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/6815
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Reviewed-by: Beowulf <beowulf@beocode.eu>
Reviewed-by: 0ko <0ko@noreply.codeberg.org>
Co-authored-by: Danko Aleksejevs <danko@very.lv>
Co-committed-by: Danko Aleksejevs <danko@very.lv>
authored by