fix(map): 移除奖励数字前的加号前缀

调整RewardItemComp和VictoryComp中的奖励数量显示逻辑，去掉原本的+号前缀，统一展示原始数值

assets/script/game/map/VictoryComp.ts

@@ -619,7 +619,7 @@ export class VictoryComp extends CCComp {
                 node.getComponent(ChipComp)?.setHeroByUuid(f.uuid);
                 const numLabel = node.getChildByName("num")?.getComponent(Label);
                 if (numLabel) {
-                    numLabel.string = `+${f.count}`;
+                    numLabel.string = `${f.count}`;
                     numLabel.node.active = true;
                 }
                 items.push(node);