message: Do not aggro on players with /invulnerable
diff: @@ -1171,7 +1171,7 @@ bool MobManager::aggroCheck(Mob *mob, time_t currTime) {
  if (plr->iConditionBitFlag & CSB_BIT_UP_STEALTH)
  mobRange /= 3;
  - if (plr->iSpecialState & CN_SPECIAL_STATE_FLAG__INVISIBLE)
  + if (plr->iSpecialState & (CN_SPECIAL_STATE_FLAG__INVISIBLE|CN_SPECIAL_STATE_FLAG__INVULNERABLE))
  mobRange = -1;
  // height is relevant for aggro distance because of platforming
  