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

まず、Drawer のフォーカス動作を既存の Modal の動作と比較し、drawer を使用した wizard を含む Drawer の例を確認します。consumer によるオーバーライドに対応した、指定された開閉時のフォーカス動作を実装し、その後、関連するすべての例とデモを更新します。完了条件は、状況に応じてフォーカスが閉じるボタン、最初の操作可能な要素、または drawer の本体に移動し、閉じたときに drawer のトグルへ戻ることです。