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

Threads v2 cleanup (#8902) master

* Delete root PostThread component * Remove PostThreadItem, migrate DebugMod to use new components * Remove other unused components * Move PostThreadFollowBtn to new home * Move PostThreadComposePrompt to new home * Remove gate * Keep naming in DebugMod * rm v1 prefs --------- Co-authored-by: Samuel Newman <mozzius@protonmail.com>