1.21.9 Update Tracking

[lynxplay]

Goals

• Rename world config's entity.spawning.despawn-time. The config should not imply that the removal follows all server despawn logic
• Rework brigadier client tree building. Redirects make briagdier commands a graph instead of a tree. DFT is not a suitable algorithm for such data structures.
• Add data converter for invalid team colours, revert Remove invalid team colors nicely #12874

TODOs

• adventure update (paper-api and paper-server build scripts)
• world border migration & check coordinate scale use
• audit spawn position changes
• add a setSpawnLocation variant w pitch and yaw use pitch and yaw when setting spawn pos with Location
• Add API equivalent for SelectableSlotContainer and move common Shelf/ChiseledBookshelf API?
• texture overrides in ResolvableProfile