create-dialog.component.html

<h2 mat-dialog-title>Créer un élément</h2>
<mat-dialog-content>Êtes vous sûr de vouloir créer {{data}} ?</mat-dialog-content>
<mat-dialog-actions align="end">
    <button mat-button mat-dialog-close>Non</button>
    <button mat-button [mat-dialog-close]="true" cdkFocusInitial>Oui</button>
</mat-dialog-actions>