fix(backend): PageService に残っていたデバッグ用 console.log を削除 (#17834)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

packages/backend/src/core/PageService.ts

@@ -141,8 +141,6 @@ export class PageService {
 				eyeCatchingImageId: body.eyeCatchingImage === undefined ? undefined : (body.eyeCatchingImage?.id ?? null),
 			});
 
-			console.log('page.content', page.content);
-
 			if (body.content != null) {
 				const beforeReferencedNotes = this.collectReferencedNotes(page.content);
 				const afterReferencedNotes = this.collectReferencedNotes(body.content);