fix(RewardDetail): 移除分享标题中的积分信息以简化显示

@@ -257,7 +257,7 @@ useLoad((options) => {
  */
 const onShareAppMessage = (res) => {
     // 确保数据已加载，提供默认值
-    const title = reward.value?.title ? `${reward.value.title} - 仅需${reward.value.points_cost || 0}积分` : '精彩优惠券等你来兑换';
+    const title = reward.value?.title ? `${reward.value.title}` : '精彩优惠券等你来兑换';
     const shareId = reward.value?.id || couponId.value || '';
     // const imageUrl = reward.value?.banner || '';