* Add support for MSC4193: Spoilers on Media
* Clarify variable names and wording
* Restore list atom
* Improve spoilered image UX with autoload off
* Use `aria-pressed` to indicate attachment spoiler state
* Improve spoiler button tooltip wording, keep reveal button from conflicting with load errors
* Make it possible to mark videos as spoilers
* Allow videos to be marked as spoilers when uploaded
* Apply requested changes
* Show a loading spinner on spoiled media when unblurred
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Co-authored-by: Ajay Bura <32841439+ajbura@users.noreply.github.com>
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