Bugfix/fix storybook story of symbol autocomplete component

The AdminService imported DataService via the barrel export
`@ghostfolio/ui/services`, which re-exports from the same
`index.ts` that also exports AdminService. This circular
dependency caused DataService to be undefined at import time
in the Storybook bundler.

Switching to a direct relative import (`./data.service`)
breaks the cycle and allows the Symbol Autocomplete story
to render correctly.

Fixes #6320

libs/ui/src/lib/services/admin.service.ts

@@ -22,7 +22,6 @@ import {
 } from '@ghostfolio/common/interfaces';
 import { DateRange } from '@ghostfolio/common/types';
 import { GF_ENVIRONMENT } from '@ghostfolio/ui/environment';
-import { DataService } from '@ghostfolio/ui/services';
 
 import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
 import { Injectable, inject } from '@angular/core';
@@ -31,6 +30,8 @@ import { DataSource, MarketData, Platform } from '@prisma/client';
 import { JobStatus } from 'bull';
 import { isNumber } from 'lodash';
 
+import { DataService } from './data.service';
+
 @Injectable({
   providedIn: 'root'
 })