Fix LLU becoming invisible to other players when dying as a vehicle passenger

src/main/scala/net/psforever/actors/session/SessionActor.scala

@@ -1822,6 +1822,9 @@ class SessionActor(middlewareActor: typed.ActorRef[MiddlewareActor.Command], con
           CancelZoningProcessWithDescriptiveReason("cancel_dmg")
         }
 
+      case AvatarResponse.DropSpecialItem() =>
+        DropSpecialSlotItem()
+
       case AvatarResponse.Killed(mount) =>
         val respawnTimer = 300.seconds
         //drop free hand item

src/main/scala/net/psforever/objects/avatar/PlayerControl.scala

@@ -707,6 +707,11 @@ class PlayerControl(player: Player, avatarActor: typed.ActorRef[AvatarActor.Comm
     super.CancelJammeredStatus(target)
     //uninitialize implants
     avatarActor ! AvatarActor.DeinitializeImplants()
+
+    // This would normally happen async as part of AvatarAction.Killed, but if it doesn't happen before deleting calling AvatarAction.ObjectDelete on the player the LLU will end up invisible to others if carried
+    // Therefore, queue it up to happen first.
+    events ! AvatarServiceMessage(nameChannel, AvatarAction.DropSpecialItem())
+
     events ! AvatarServiceMessage(
       nameChannel,
       AvatarAction.Killed(player_guid, target.VehicleSeated)

src/main/scala/net/psforever/services/avatar/AvatarService.scala

@@ -415,6 +415,9 @@ class AvatarService(zone: Zone) extends Actor {
             )
           )
 
+        case AvatarAction.DropSpecialItem() =>
+          AvatarEvents.publish(AvatarServiceResponse(s"/$forChannel/Avatar", Service.defaultPlayerGUID, AvatarResponse.DropSpecialItem()))
+
         case _ => ;
       }
 

src/main/scala/net/psforever/services/avatar/AvatarServiceMessage.scala

@@ -149,6 +149,7 @@ object AvatarAction {
       inventory: List[InventoryItem],
       drop: List[InventoryItem]
   ) extends Action
+  final case class DropSpecialItem() extends Action
 
   final case class TeardownConnection() extends Action
   //  final case class PlayerStateShift(killer : PlanetSideGUID, victim : PlanetSideGUID) extends Action

src/main/scala/net/psforever/services/avatar/AvatarServiceResponse.scala

@@ -117,6 +117,7 @@ object AvatarResponse {
       inventory: List[InventoryItem],
       drop: List[InventoryItem]
   ) extends Response
+  final case class DropSpecialItem() extends Response
 
   final case class TeardownConnection() extends Response
   //  final case class PlayerStateShift(itemID : PlanetSideGUID) extends Response