Drawer - automatically manage focus when drawer is opened/closed

Follow up for core issue https://github.com/patternfly/patternfly/issues/5319
A more consistent solution than was used to fix https://github.com/patternfly/patternfly-react/issues/8394

move the close button to the top of the drawer body rather than the end.

The modal component automatically places focus on the first interactable element in the modal when it is opened.
In the case of the Drawer, that should be the close button by default.
If the close button is not provided, then it should be the first interactable element in the drawer.
If there are no interactable elements, focus should be placed on the drawer body.

Like the modal, this should happen automatically for the drawer, unless overridden by the consumer.

When the drawer is closed, focus should be returned to the drawer toggle - or at least, the props needed for the consumer to implement this focus management should be exposed. All related examples/demos should be updated to use this behavior (including the wizard with drawer)

Jira Issue: PF-145

Commencez par comparer le comportement du focus de Drawer avec le comportement existant de Modal et examinez les exemples de Drawer, y compris le wizard avec drawer. Implémentez le comportement indiqué du focus à l’ouverture et à la fermeture, avec des remplacements définis par le consumer, puis mettez à jour tous les exemples et toutes les démos associés. Le travail est terminé lorsque le focus atteint le bouton de fermeture, le premier élément interactif ou le corps du drawer selon le cas, et revient au toggle du drawer lors de la fermeture.