feat(demo): add cdkFocusInitial

Author: joejordanbrown

src/app/shared/components/support/support.component.html

@@ -102,7 +102,7 @@
 
   <div class="form">
     <mat-form-field style="width: 100%; margin-bottom: -10px;">
-      <input matInput placeholder="Message">
+      <input matInput placeholder="Message" cdkFocusInitial>
     </mat-form-field>
   </div>
 </div>

src/app/shared/components/theme-picker/theme-picker.component.html

@@ -6,6 +6,7 @@
        (click)="theme=item.className"
        [class.hover]="hovering!==null"
        (focus)="hovering=item.className"
+       [attr.cdkFocusInitial]="theme===item.className || null"
        (mouseenter)="hovering=item.className"
        (mouseleave)="hovering=null">
     <mat-icon *ngIf="theme===item.className">check_circle</mat-icon>