refactor(map): 移除冗余属性装饰器并调整金币数值

清理 MissionComp 中部分属性的 @property 装饰器，这些属性无需在编辑器面板中暴露。
同时调整准备阶段金币奖励的基础值和上限，以平衡游戏经济。

assets/script/game/map/MissionComp.ts

@@ -26,16 +26,13 @@ export class MissionComp extends CCComp {
     private debugMode: boolean = false;
     @property({ tooltip: "是否显示战斗内存观测面板" })
     private showMemoryPanel: boolean = false;
-    @property({ tooltip: "场上怪物上限" })
+
+    
     private maxMonsterCount: number = 5;
-    @property({ tooltip: "恢复刷怪阈值" })
     private resumeMonsterCount: number = 3;
-    @property({ tooltip: "准备阶段基础金币奖励" })
-    private prepareBaseCoinReward: number = 10;
-    @property({ tooltip: "每波准备阶段额外金币" })
+    private prepareBaseCoinReward: number = 100;
     private prepareCoinWaveGrow: number = 1;
-    @property({ tooltip: "准备阶段金币奖励上限" })
-    private prepareCoinRewardCap: number = 20;
+    private prepareCoinRewardCap: number = 500;
     
     // VictoryComp:any = null;
     // reward:number = 0;