fix: Reannounce validation error in date range picker on apply

[abdhalees]

Description

When a user clicks on "Apply" in DateRangePicker, the error text should be reannounced

Related links, issue #, if available: AWSUI-60295

How has this been tested?

with voice over on, following the recording in the ticket

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

---

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.42%. Comparing base (28012d5) to head (e7f109c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3210   +/-   ##
=======================================
  Coverage   96.42%   96.42%           
=======================================
  Files         789      789           
  Lines       22255    22253    -2     
  Branches     7636     7638    +2     
=======================================
- Hits        21459    21458    -1     
+ Misses        789      743   -46     
- Partials        7       52   +45     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[jperals]

Could we have integ coverage for this?