1. NECK region explicitly blocked in interactLivingEntity() — prevents
V2 collars equipping without ownership setup (latent, no JSONs yet)
2. Swap rollback safety: if re-equip fails after swap failure, drop the
old bind as item entity instead of losing it silently
3. GaggingComponent: cache GagMaterial at construction time — eliminates
valueOf() log spam on every chat message with misconfigured material
4. Dual-bind prevention: check both V1 isTiedUp() AND V2 region occupied
in TyingInteractionHelper and PacketSelfBondage to prevent equipping
V2 bind on top of V1 bind
BUG-001: TyingInteractionHelper swap now checks V2EquipResult — on failure,
rolls back by re-equipping the old bind instead of leaving target untied
BUG-002: OwnershipComponent.onUnequipped no longer double-calls
unregisterWearer — onCollarRemoved already handles it. Suppressed-alert
path calls unregister directly since onCollarRemoved is skipped.
BUG-003: PacketSelfBondage handleV2SelfBind now clears completed tying
task from PlayerBindState to prevent blocking future tying interactions
RISK-003: StruggleCollar get/setResistanceState null-guard on player
QA-001: add instanceof V2TyingPlayerTask guard before cast to prevent
ClassCastException when a V1 TyingPlayerTask was still active
QA-002: remove stack.shrink(1) after tying completion — V2TyingPlayerTask
.onComplete() already consumes the held item via heldStack.shrink(1)
