Several changes about token refreshing.

frontend/src/app/app.config.ts

@@ -1,10 +1,11 @@
-import { ApplicationConfig } from '@angular/core';
+import { APP_INITIALIZER, ApplicationConfig } from '@angular/core';
 import { provideRouter, withRouterConfig } from '@angular/router';
 
 import { HTTP_INTERCEPTORS, provideHttpClient, withInterceptorsFromDi } from '@angular/common/http';
 import { provideAnimationsAsync } from '@angular/platform-browser/animations/async';
 import { routes } from './app.routes';
 import { JwtInterceptor } from './core/interceptor/jwt.interceptor';
+import { AuthenticationService } from './core/service/authentication.service';
 
 export const appConfig: ApplicationConfig = {
   providers: [
@@ -18,5 +19,11 @@ export const appConfig: ApplicationConfig = {
     provideAnimationsAsync(),
     provideHttpClient(withInterceptorsFromDi()),
     { provide: HTTP_INTERCEPTORS, useClass: JwtInterceptor, multi: true },
+    {
+      provide: APP_INITIALIZER,
+      useFactory: (authenticationService: AuthenticationService) => () => authenticationService.startAuthenticationCheckingProcess(),
+      deps: [AuthenticationService],
+      multi: true
+    }
   ]
 };