This was [implemented](022820103d) almost 10 years ago in Gogs.
It was using `readonly` attribute instead of `disabled` on checkbox which was doing nothing. According to [MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/readonly), `readonly` attribute is not applicable to checkbox inputs. This bug was reported by mrwusel in Matrix room.
Fork page that has similar UI feature did not have this bug.
- replace `readonly` with `disabled`
- do not put info about the restriction directly into the checkbox title
### Before
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### After
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### In other case
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Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/3786
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>