Fixes https://github.com/go-gitea/gitea/issues/25130
The old code uses `$(this).next()` to get `dismiss-review-modal`.
At first, it will get `$(#dismiss-review-modal)`, but the next time it
will get `$(#dismiss-review-modal).next();`
and then `$(#dismiss-review-modal).next().next();`.
Because div `dismiss-review-modal` will be removed when
`dismiss-review-btn` clicked.
Maybe the right usage is adding `show-modal` class and `data-modal`
attribute.