Accessibility improvement: modal gets read out twice

[gabo0oo]

• Encountered using VO on Mac
• When opening the modal with VO on, I'm read the entire contents of the modal twice.
• How replicate: See USWDS modal component, turn on VO or other screen reader and trigger the modal. See that it only reads off once. Go to our app, go to the dashboard and trigger the modal by clicking "Delete", see how the modal gets read off twice.
• Note I don't know if this occurs on other screen readers. I only observed this on VO (native mac app).
• This is occurring on all modals

Originally posted by @gabydisarli in #1590 (comment)

Prioritization Comments

WCAG Conformance Level:
WCAG Standard that applies:
Critical Failure if Not Met?:
Prioritization:
Reason:

[gabo0oo]

@zandercymatics FYSA

[vickyszuchin]

This bug has been sized by dev and meets the DoR criteria. Moving it to "Ready."

[PaulKuykendall]

@AnnaGingle - can you verify that this is still a problem?? Thanks

[AnnaGingle]

@gabydisarli Is this on every modal?

[gabo0oo]

@AnnaGingle I made this issue a really long time ago so I would have to go in a check it all again. I did a quick check on the modal that appears on the submit your domain request button on the review page and I hear it read out twice. When first opened, the entire modal gets read out, then it says "Dialog" then reads it all out again. I hear this using VO on my mac.

[AnnaGingle]

@gabydisarli Can you record what you're seeing / hearing with Quicktime player?

[gabo0oo]

recording of the VO dialog on the uswds component
https://github.com/user-attachments/assets/8668cc8f-7599-41fd-a83c-8c2837826394

recording of the VO dialog on the submit your domain request modal. Note that visually nothing changes on the dialog window but what I hear is the modal get read out and then "dialog:" and the modal gets read out a 2nd time. On USWDS the modal reads it out once. It says "dialog" before it gets read out, exactly the same way that the 2nd round of ours gets read out.
https://github.com/user-attachments/assets/d021729a-e8a1-4b34-b51d-5daa2cc346d1

[gabo0oo]

@AnnaGingle ^see recordings above

[gabo0oo]

Weirdly, I don't see this happening on the Delete a domain request button anymore. I didn't check all modals but am using the submit your domain request modal as an example.

[zandercymatics]

Changed size from 3 => 2

[zandercymatics]

I've narrowed this issue down to a library issue with USWDS. I've filed a bug ticket here but will look into modifying our custom uswds.js file to see if I can resolve this issue directly