Transmission #023: Safe hit-reaction triggers on PlayerCombat

PlayerCombat.TriggerHit() always called Animator.SetTrigger("Hit"), but PlayerAnimator.controller has no Hit trigger, so when mobs called it after dealing damage Unity logged errors. The player rig is unrelated to Stylized enemy animators; the fix is on the player side.

TriggerHit now only fires a trigger that actually exists on the controller, trying names from a configurable list (default Hit, then GetHit). If none match, it no-ops quietly. You can add the trigger name your rig uses in the inspector array.