The issue checkbox code received a few more cleanups and I specifically
tested it. The other changes are trivial. Also, I checked the cases for
how many elements match the jQuery selection to determine querySelector
vs. querySelectorAll.
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Co-authored-by: Giteabot <teabot@gitea.io>
(cherry picked from commit 21fe512aac42c9ce3440b8eaae6b2cb2116a0e50)