sort 관련 정리

src/entities/common/model/constant.ts

@@ -1,11 +1,10 @@
 import { PATHS } from "@/shared/constants/paths";
+import { SortTypeKeys } from "./types";
 
 export const DEFAULT_PAGE_PARAM = {
-  cursor: 'string',
+  cursor: null,
   size: 0,
-  sortBy: 'string',
-  sortOrder: 'ASC',
-  orderBy: 'string',
+  sortType: SortTypeKeys.LATEST,
   limit: 0
 };