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/clients/clients-view/datatable-tab/datatable-tab.component.ts

@@ -1,4 +1,4 @@
-import { Component } from '@angular/core';
+import { Component, inject } from '@angular/core';
 import { ActivatedRoute } from '@angular/router';
 import { EntityDatatableTabComponent } from '../../../shared/tabs/entity-datatable-tab/entity-datatable-tab.component';
 import { STANDALONE_SHARED_IMPORTS } from 'app/standalone-shared.module';
@@ -13,11 +13,13 @@ import { STANDALONE_SHARED_IMPORTS } from 'app/standalone-shared.module';
   ]
 })
 export class DatatableTabComponent {
+  private route = inject(ActivatedRoute);
+
   entityId: string;
   entityDatatable: any;
   multiRowDatatableFlag: boolean;
 
-  constructor(private route: ActivatedRoute) {
+  constructor() {
     this.entityId = this.route.parent.parent.snapshot.paramMap.get('clientId');
 
     this.route.data.subscribe((data: { clientDatatable: any }) => {