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| Summary: |
The tour dialog should be announced and the background elements should not be accessible |
| Description: |
When the tour dialog opens up, the user is not notified.
In order for this announcement to go well, the usual solution is to add `role-dialog` on the element.
When navigating the content with arrows with screen readers, since it's not a real dialog right now, it's also possible to go outside the dialog, which is unexpected. |
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