SUPPORT-8638:fix from review(2)

frontend/src/ts/ervu-dashboard/FilterTransferService.ts

@@ -1,7 +1,9 @@
 import { Injectable } from '@angular/core';
 import { BehaviorSubject } from 'rxjs';
 
-@Injectable()
+@Injectable({
+              providedIn: 'root'
+            })
 export class FilterTransferService {
   private filtersSource = new BehaviorSubject<Record<string, any>>({});
   public currentFilters$ = this.filtersSource.asObservable();