fix: avatarId が null のときにも avatarUrl が non null 担ってることがある問題 (#15833)

packages/backend/src/server/web/ClientServerService.ts

@@ -534,7 +534,7 @@ export class ClientServerService {
 
 				return await reply.view('user', {
 					user, profile, me,
-					avatarUrl: user.avatarUrl ?? this.userEntityService.getIdenticonUrl(user),
+					avatarUrl: _user.avatarUrl,
 					sub: request.params.sub,
 					...await this.generateCommonPugData(this.meta),
 					clientCtx: htmlSafeJsonStringify({