Upgrading to Angular 20:

Replaced checked in package-lock.json by regenerated one.
Ran ng update @angular/core@20 @angular/cli@20
Ran npm install @angular-builders/jest@^20.0.0 @fortawesome/angular-fontawesome@^3.0.0 @swimlane/ngx-graph@^11
Ran npm install ngx-mat-select-search@^8.0.2.
Ran ng update @angular/material@20.
Updated all eslint and typescript to the latest versions.
Removed @angular-devkit/schematics.
Updated fontawesome.
Updated rxjs and tslib.
Moved required node version from 16 to 20.
Updated jest-preset-angular.
Set preserveWhitespaces to false.
Corrected two type declarations in two typescript files to make ng serve run without errors.
Removed unused angular-devkit/schematics from view-user.component.ts .
Updated list of supported browsers.
Upgraded prettier.
Ran prettier . --write the first time.
Ran prettier . --write the second time.
Ran ng generate @angular/core:inject with defaults, excepted a handful of files.
Fixed remaining eslint problems.
Added dist directory to ignores in eslint.config.js.
Let prettier fix formatting, almost everything is just line breaks.
Made htmlhint ignore @if and @for Angular constructs.
Updated node version in Github workflow to 22.12.0 (build.yml).
Updated .env.ts.
Updated Angular datetime format strings from YYYY-MM-DD to yyyy-MM-dd.
Merged changes from dev into angular20 branch.

src/app/zitadel/auth.service.ts

@@ -1,4 +1,4 @@
-import { Injectable } from '@angular/core';
+import { Injectable, inject } from '@angular/core';
 import { HttpClient, HttpParams, HttpHeaders } from '@angular/common/http';
 import { ActivatedRoute, Router } from '@angular/router';
 
@@ -13,6 +13,13 @@ import { environment } from '../../environments/environment';
 
 @Injectable({ providedIn: 'root' })
 export class AuthService {
+  private authenticationService = inject(AuthenticationService);
+  private http = inject(HttpClient);
+  private route = inject(ActivatedRoute);
+  private router = inject(Router);
+  private alertService = inject(AlertService);
+  private translateService = inject(TranslateService);
+
   private baseUrl = environment.OIDC.oidcBaseUrl;
   private authUrl = `${this.baseUrl}oauth/v2/authorize`;
   private tokenUrl = `${this.baseUrl}oauth/v2/token`;
@@ -21,14 +28,6 @@ export class AuthService {
   private frontUrl = environment.OIDC.oidcFrontUrl;
   private redirectUri = `${this.frontUrl}#/callback`;
   private refreshTimeoutId: any = null;
-  constructor(
-    private authenticationService: AuthenticationService,
-    private http: HttpClient,
-    private route: ActivatedRoute,
-    private router: Router,
-    private alertService: AlertService,
-    private translateService: TranslateService
-  ) {}
 
   async login() {
     const codeVerifier = this.generateRandomString();