fix donwload attachment and modal to edit message

src/app/module/chat/data/repository/message/message-local-data-source.service.ts

@@ -1,8 +1,5 @@
 import { Injectable } from '@angular/core';
 import { liveQuery } from 'Dexie';
-import { err, ok, Result } from 'neverthrow';
-import { Observable, Subject } from 'rxjs';
-import { filter } from 'rxjs/operators';
 import { MessageEntity } from '../../../../../core/chat/entity/message';
 import { DexieRepository } from 'src/app/infra/repository/dexie/dexie-repository.service';
 import { Observable as  DexieObservable, PromiseExtended } from 'Dexie';