TreeChopperUltra

Fixes

• Double axe damage. The first broken block no longer loses durability twice — vanilla handles this itself, and the mod only completes the chain. This matches the vanilla breaking mechanics exactly.
• The Unbreakable flag is respected. Axes with the unbreakable tag no longer lose durability when chopping down trees.
• Folia: crashes when chopping down trees on chunk boundaries. Complete rework of foliage handling for threaded regions — no more IllegalStateExceptions when accessing a foreign region.
• Folia: data races in the /treechopper toggle. Toggle states have been moved to a ConcurrentHashMap, and service fields have been marked as volatile.
• Correct visibility for CoreProtect / McMMO / statistics. The first broken block now triggers a genuine BlockBreakEvent + BlockDropItemEvent — third-party mods see the player’s normal break event, not a synthetic one.