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/mapper/KeyboardWalletTransactionMapper.java

@@ -4,9 +4,9 @@ import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.yolo.keyborad.model.entity.KeyboardWalletTransaction;
 
 /*
-* @author: ziin
-* @date: 2025/12/10 18:54
-*/
-    
+ * @author: ziin
+ * @date: 2025/12/22 18:10
+ */
+
 public interface KeyboardWalletTransactionMapper extends BaseMapper<KeyboardWalletTransaction> {
 }