fix(service): 修复查询用户主题时调用错误服务

将 KeyboardThemePurchaseService 改为 userThemesService，并调整查询条件从支付状态改为删除标记，确保获取正确的用户主题列表。

src/main/java/com/yolo/keyborad/service/impl/KeyboardThemePurchaseServiceImpl.java

@@ -205,14 +205,14 @@ public class KeyboardThemePurchaseServiceImpl extends ServiceImpl<KeyboardThemeP
      * @return 用户已购买的主题详情列表
      */
     public List<KeyboardThemesRespVO> getUserPurchasedThemes(Long userId) {
-        // 1. 查询用户所有已支付的主题ID列表
-        List<Long> themeIds = this.lambdaQuery()
-                .eq(KeyboardThemePurchase::getUserId, userId)  // 根据用户ID筛选
-                .eq(KeyboardThemePurchase::getPayStatus, (short) 1)  // 支付状态为1（已支付）
+        // 1. 从用户主题表查询主题ID列表
+        List<Long> themeIds = userThemesService.lambdaQuery()
+                .eq(KeyboardUserThemes::getUserId, userId)
+                .eq(KeyboardUserThemes::getViewDeleted, false)
                 .list()
                 .stream()
-                .map(KeyboardThemePurchase::getThemeId)  // 提取主题ID
-                .distinct()  // 去重
+                .map(KeyboardUserThemes::getThemeId)
+                .distinct()
                 .collect(java.util.stream.Collectors.toList());
 
         // 2. 如果没有购买记录，返回空列表