fix: Fixes stalled connections and infinite throttle (#1796)

> [!Warning]
> **Developer Warning**
> The `PacketThrottle` callback return value is now reversed. `true` indicates the connection is _throttled_.

### Summary
- Fixes an issue where connections get stalled forever
- Fixes an issue where the throttler is not working properly
- Removes account attack limiter
- Rewrites IP limiter
- Removes IP restrictions (they weren't used, and not practical)
- Fixes issue where IP limiter was counting before firewall was blocking.

View without whitespace:
https://github.com/modernuo/ModernUO/pull/1796/files?diff=split&w=1

Projects/Server/Network/TcpServer.cs

@@ -223,7 +223,6 @@ public static class TcpServer
 
     private static void ProcessConnection(Socket socket)
     {
-        var ipLimiter = IPLimiter.Enabled;
         try
         {
             var remoteIP = ((IPEndPoint)socket.RemoteEndPoint)!.Address;
@@ -247,15 +246,6 @@ public static class TcpServer
                 return;
             }
 
-            if (ipLimiter && !IPLimiter.Verify(remoteIP))
-            {
-                TraceDisconnect("Past IP limit threshold", remoteIP);
-                logger.Debug("{Address} Past IP limit threshold", remoteIP);
-
-                CloseSocket(socket);
-                return;
-            }
-
             var firewalled = Firewall.IsBlocked(remoteIP);
             if (!firewalled)
             {
@@ -273,6 +263,15 @@ public static class TcpServer
                 return;
             }
 
+            if (!IPLimiter.Verify(remoteIP))
+            {
+                TraceDisconnect("Past IP limit threshold", remoteIP);
+                logger.Debug("{Address} Past IP limit threshold", remoteIP);
+
+                CloseSocket(socket);
+                return;
+            }
+
             var ns = new NetState(socket);
             ConnectedQueue.Enqueue(ns);
         }