Fix Angular 21 login by adding APP_INITIALIZER for OIDC authentication

[Copilot]

Login was broken because checkAuth() was only called in AppComponent.ngOnInit(), which occurs after routing initialization. Angular 21 requires OIDC authentication to be resolved before the app bootstraps.

Changes

• app.module.ts: Add APP_INITIALIZER provider that invokes checkAuth() during bootstrap

  export function configureAuth(oidcSecurityService: OidcSecurityService) {
    return () => firstValueFrom(oidcSecurityService.checkAuth());
  }
  
  providers: [{
    provide: APP_INITIALIZER,
    useFactory: configureAuth,
    deps: [OidcSecurityService],
    multi: true,
  }]

• app.component.ts: Subscribe to isAuthenticated$ observable instead of calling checkAuth() to avoid redundant auth checks

• dataeventrecords components: Fix AuthenticatedResult type handling - extract boolean from result object when passing to getData()

Original prompt

Login in Angular does not work in the https://github.com/damienbod/AspNetCoreOpeniddict/tree/feature/angular21 branch, please fix in this branch

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