fix(游戏逻辑): 初始化任务怪物组件时重置计时器和队列

refactor(UI): 调整top.prefab中元素的尺寸和对齐方式

assets/script/game/map/MissionMonComp.ts

@@ -56,6 +56,9 @@ export class MissionMonCompComp extends CCComp {
         smc.vmdata.mission_data.mon_num=0
         // 重置生成顺序计数器
         this.globalSpawnOrder = 0
+        this.gameTime = 0
+        this.spawnLogicTimer = 0
+        this.MonQueue = []
         this.do_mon_wave()
     }