bug：修复排位赛对抗类型跳转错比赛页面问题

src/pages/match-page.vue

@@ -26,13 +26,15 @@ async function onReceiveMessage(msg) {
     onComplete.value = () => {}
   }
   if (msg.type === MESSAGETYPESV2.AboutToStart) {
-    if (gameType.value == 1) {
+    // 使用后端下发的 mode 字段判断跳转目标，与好友约战（battle-room.vue）保持一致
+    // mode <= 3 为团队对抗，mode > 3 为大乱斗，覆盖全部 gameType（1~5），不再遗漏
+    if (msg.mode <= 3) {
       uni.redirectTo({
-        url: `/pages/team-battle?battleId=${msg.id}&gameMode=2`,
+        url: `/pages/team-battle?battleId=${msg.id}`,
       });
-    } else if (gameType.value == 2) {
+    } else {
       uni.redirectTo({
-        url: `/pages/melee-battle?battleId=${msg.id}&gameMode=2`,
+        url: `/pages/melee-battle?battleId=${msg.id}`,
       });
     }
   }