Handle disconnects, add restart flow and UI fixes

Server: Make DisconnectedPlayer async, await hub notifications, add logging, and delay scheduled deletion (2s). Harden ScheduleGameDeletion with try/catch and only destroy/send GameDestroyed when game is not running or has no players.

Client: Add restart-game flow — expose restartGame on OnlineGame, propagate event from GameEndedMenu (adds local restarted state and disables button), and hook restart handling + player disconnect on unmount in OnlineMode. Also conditionally show bot switch in GameCreationMenu and include replayGameCode in GameEnded interface. Remove automatic reconnect on SignalR connection.

Overall: Improves robustness around player disconnects and adds a UI/logic path for restarting games.

GUI/src/routes/OnlineMode.vue

@@ -9,7 +9,7 @@ import type { GameSettings } from '@/scripts/interfaces/GameSettings';
 import type JoinGameObject from '@/scripts/interfaces/JoinGameObject';
 import OnlineGame from '@/scripts/logic/onlineMode/OnlineGame';
 import type { GameEnded } from '@/scripts/logic/signalR/GameConnection';
-import { ref } from 'vue';
+import { onUnmounted, ref } from 'vue';
 
 enum CurrentState {
   CreateOrJoinSelection,
@@ -63,6 +63,15 @@ async function createGame() {
 async function tryToJoin() {
   await game.value.joinGame(joiningModel.value);
 }
+
+async function restartGame() {
+  if(!gameEndedInformation.value?.replayGameCode) return;
+  await game.value.restartGame(gameEndedInformation.value.replayGameCode);
+}
+
+onUnmounted(async () => {
+  await game.value.player.disconnect();
+});
 </script>
 
 <template>
@@ -89,6 +98,7 @@ async function tryToJoin() {
   <GameEndedMenu
     :game-ended-information="gameEndedInformation"
     v-else-if="currentState === CurrentState.EndScreen"
+    @restart-game="restartGame()"
   ></GameEndedMenu>
 
   <div id="game" v-else>