Fix sending CUI packets to unwilling clients.
Some servers track channel registration: NF throws an error every time this happens; Bukkit silently drops it; Fabric silently sends it (presumably the client ignores it). (cd2ddefa by wizjany)
Fix legacy blocks not transmogging on NeoForge. (c497fe44 by wizjany)
Fix tree generators working on the unbuffered underlying world. (#2705)
Adds two methods to EditSession to allow getting blocks which are buffered by the EditSession, not yet set in the world.
This allows the proxies used by tree generators to know the eventual state of the world, rather than the "real" state. (f002c034 by wizjany)
Just re-throw here given it's already an extremely niche condition and will block commands
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Co-authored-by: Maddy Miller <mnmiller1@me.com> (b0c14624 by sirywell)
