Bluesky app fork with some witchin' additions 馃挮 forked from jollywhoppers.com/witchsky.app

Remove remaining usages of old post thread query (#9184) master

* Remove remaining usages of old post thread query * Add PostThreadContext, cache mutator for threadgates on threads, pipe it through * Replace getPostThread in threadgate query * Replace in initQuote handling, which isn't even used rn... * Missing import * Revert ext change