Tooltip variation - announce contents as alert

[jgiardino]

The ClipboardCopy component displays a tooltip for the Copy button, and on click, a tooltip with a different set of contents display. #1538

This pattern currently isn't accessible in all screen readers, but there is currently an issue open to make further a11y improvements to the tooltip: #789

As part of this issue, the following should happen:

• When Tooltip accessibility #789 is closed, test the ClipboardCopy component in all screen readers to determine if it's accessible with the updates that were made to the tooltip
• Make recommendations for any other enhancements needed to make the tooltip accessible for this specific interaction pattern.
  • One possible alternative is to render the tooltip as an aria-live region.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.