add method interface

apps/app/src/server/service/page/page-service.ts

@@ -32,4 +32,5 @@ export interface IPageService {
     page: PageDocument, creatorId: ObjectIdLike | null, operator: any | null, userRelatedGroups: PopulatedGrantedGroup[]
   ): boolean,
   getYjsData(pageId: string, revisionBody?: string): Promise<CurrentPageYjsData>,
+  hasRevisionBodyDiff(pageId: string, comparisonTarget?: string): Promise<boolean>,
 }