Port db2c58d47a to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

I don't like it changing files this way, but it's basically what
c49213f0ea and a few others did.

This fixes crashes in pleroma when writing toots with a content warning,
since pleroma inserts a “nsfw” hashtag that isn't part of the toot's text.

Inspired by f9b23a5d62