Refactor getRaceLimit method in MultiChatDialog: Simplify logic by returning a fixed value of 1, ensuring consistent race limit handling.

frontend/src/dialogues/chat/MultiChatDialog.vue

@@ -599,12 +599,7 @@ export default {
             });
         },
         getRaceLimit() {
-            try {
+            return 1;
-                const ls = localStorage.getItem('chatWsRaceMax');
-                const n = parseInt(ls, 10);
-                if (!isNaN(n) && n > 0) return Math.min(n, 6);
-            } catch (_) { }
-            return this.raceLimit || 1;
         },
         spawnCandidate(url, protocols) {
             if (!this.opened) return;