fix: resolve AutoRelog reconnect errors (#3036)

- Reset _BotRecoAttempts on successful game join so retry counter
  does not carry stale state across sessions
- Display "unlimited" instead of near-int.MaxValue retry count when
  Retries is set to -1 (infinite)
- Guard SendText with CanSendMessage check to prevent
  NullReferenceException when bots call send after disconnect
- Catch SocketException/IOException in Protocol18 Updater thread so
  a closed socket triggers OnConnectionLost gracefully instead of an
  unhandled exception

Made-with: Cursor

MinecraftClient/Protocol/Handlers/Protocol18.cs

@@ -324,6 +324,12 @@ namespace MinecraftClient.Protocol.Handlers
             catch (NullReferenceException)
             {
             }
+            catch (SocketException)
+            {
+            }
+            catch (System.IO.IOException)
+            {
+            }
 
             if (cancelToken.IsCancellationRequested)
                 return;