refactor(face): 重构人脸服务接口和实现

- 修改 getById 方法返回类型为 FaceEntity 并直接调用仓库层
- 移除删除人脸时的用户权限检查逻辑
- 删除 contentListUseDefaultFace 方法的实现
- 从服务接口中移除 contentListUseDefaultFace 方法定义

src/main/java/com/ycwl/basic/service/pc/FaceService.java

@@ -40,8 +40,6 @@ public interface FaceService {
 
     List<ContentPageVO> faceContentList(Long faceId);
 
-    ApiResponse<List<ContentPageVO>> contentListUseDefaultFace();
-
     void bindFace(Long faceId, Long memberId);
 
     String bindWxaCode(Long faceId);

src/main/java/com/ycwl/basic/service/pc/impl/FaceServiceImpl.java

@@ -677,13 +677,6 @@ public class FaceServiceImpl implements FaceService {
         return contentList;
     }
 
-    @Override
-    public ApiResponse<List<ContentPageVO>> contentListUseDefaultFace() {
-        FaceRespVO lastFaceByUserId = faceMapper.findLastFaceByUserId(BaseContextHandler.getUserId());
-        List<ContentPageVO> contentPageVOS = faceContentList(lastFaceByUserId.getId());
-        return ApiResponse.success(contentPageVOS);
-    }
-
     @Override
     public void bindFace(Long faceId, Long memberId) {
         FaceEntity face = faceRepository.getFace(faceId);