fix: Fixes crashing due to bad packet assumptions. (#1829)

### Summary
- Fixes various exploits that can crash the shard when the client misbehaves.
- Clients will now be disconnected if they send packets that are marked as out of game only (new flag), while they are in-game.


> [!Note]
> **Developer Note**
> Added an `OutOfGameOnly` which should be used to flag packets as only available out of the game.
> This is the opposite of, yet not the converse to `InGameOnly`.

Projects/UOContent/Network/ContainerGridPacketHandler.cs

@@ -19,9 +19,8 @@ namespace Server.Network;
 
 public unsafe class ContainerGridPacketHandler : PacketHandler
 {
-    public ContainerGridPacketHandler(int packetID, int length, bool ingame,
-        delegate*<NetState, SpanReader, void> onReceive)
-        : base(packetID, length, ingame, onReceive)
+    public ContainerGridPacketHandler(int packetID, int length, delegate*<NetState, SpanReader, void> onReceive)
+        : base(packetID, length, true, false, onReceive)
     {
     }