New project with Board Modal : aria-hidden="true" is used incorrectly.

Issue Summary

For the New project with board modal, aria-hidden="true" is provided to the modal making it inaccessible to assistive technology.

Steps to Reproduce

1. In the Jira header section, navigate to the Board link and select the "View all boards" option.
2. In the Boards main content area, select Create board.
3. A modal will appear for "Create an Agile board", select the "Create a Scrum board with sample data" button and activate it.
4. The modal for "New project with board modal" will appear, try interacting with the modal and inspect the modal.

Screenshot

Actual Results

The "aria-hidden" attribute is provided to the "New project with board modal", which becomes available on selecting the Create board. As a result, screen reader users cannot access the modal effectively.

Expected Results

Remove aria-hidden=”true” from the <div> element in the page source for the modal.

The aria-hidden="true" attribute is used to hide the content from assistive technology users. Although it is a best practice to use the aria-hidden="true" attribute to hide irrelevant content for screen reader users, it can pose issues for screen reader users if it is not used correctly. 
Additionally, ensure the focus does not move out of the modal in the background content unless the modal is closed.

Workaround

Currently, there is no known workaround for this behaviour. A workaround will be added here when available

Bug Ref: 726064