fix: remove redundant index specs in UserDataFile inherited from BaseUpload (#34185)

apps/meteor/server/models/raw/Avatars.ts

 import type { IAvatar, RocketChatRecordDeleted, IUser } from '@rocket.chat/core-typings';
 import type { IAvatarsModel } from '@rocket.chat/model-typings';
-import type { Collection, Db, FindOptions } from 'mongodb';
+import type { Collection, Db, IndexDescription, FindOptions } from 'mongodb';
 
 import { BaseUploadModelRaw } from './BaseUploadModel';
 
@@ -9,6 +9,10 @@ export class AvatarsRaw extends BaseUploadModelRaw implements IAvatarsModel {
 		super(db, 'avatars', trash);
 	}
 
+	protected modelIndexes(): IndexDescription[] {
+		return [...super.modelIndexes(), { key: { userId: 1 }, sparse: true }];
+	}
+
 	findOneByUserId(userId: IUser['_id'], options?: FindOptions<IAvatar>) {
 		return this.findOne({ userId }, options);
 	}

apps/meteor/server/models/raw/BaseUploadModel.ts

@@ -19,7 +19,6 @@ type T = IUpload;
 export abstract class BaseUploadModelRaw extends BaseRaw<T> implements IBaseUploadsModel<T> {
 	protected modelIndexes(): IndexDescription[] {
 		return [
-			{ key: { userId: 1 }, sparse: true },
 			{ key: { name: 1 }, sparse: true },
 			{ key: { rid: 1 }, sparse: true },
 			{ key: { expiresAt: 1 }, sparse: true },