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/centers/centers-view/center-actions/manage-groups/manage-groups.component.html

@@ -6,9 +6,11 @@
     </mat-form-field>
 
     <mat-autocomplete autoActiveFirstOption #groupsAutocomplete="matAutocomplete" [displayWith]="displayGroup">
-      <mat-option *ngFor="let group of groupsData" [value]="group">
-        {{ group.name }}
-      </mat-option>
+      @for (group of groupsData; track group) {
+        <mat-option [value]="group">
+          {{ group.name }}
+        </mat-option>
+      }
     </mat-autocomplete>
 
     <div class="mat-table">
@@ -36,19 +38,23 @@
   <mat-card class="flex-50">
     <h3 matSubheader>{{ 'labels.heading.Group Members' | translate }}</h3>
 
-    <mat-nav-list *ngIf="groupMembers?.length">
-      <div mat-list-item class="member-item center-gap" *ngFor="let group of groupMembers; index as i">
-        <span matLine class="p-t-10">{{ group.name }}</span>
-        <button
-          mat-icon-button
-          color="warn"
-          class="delete-btn"
-          aria-label="Remove group"
-          (click)="removeGroup(i, group)"
-        >
-          <fa-icon icon="trash"></fa-icon>
-        </button>
-      </div>
-    </mat-nav-list>
+    @if (groupMembers?.length) {
+      <mat-nav-list>
+        @for (group of groupMembers; track group; let i = $index) {
+          <div mat-list-item class="member-item center-gap">
+            <span matLine class="p-t-10">{{ group.name }}</span>
+            <button
+              mat-icon-button
+              color="warn"
+              class="delete-btn"
+              aria-label="Remove group"
+              (click)="removeGroup(i, group)"
+            >
+              <fa-icon icon="trash"></fa-icon>
+            </button>
+          </div>
+        }
+      </mat-nav-list>
+    }
   </mat-card>
 </div>