Chore: add aria hidden if modal is open

[ggazzo]

• Prevents users from opening modals and get focused on other areas
• Tells screen readers to ignore other areas that are not part of the form

Proposed changes (including videos or screenshots)

Issue(s)

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Further comments

[codecov]

Codecov Report

Merging #26826 (3a76ae1) into develop (d30e08e) will not change coverage.
The diff coverage is n/a.

❗ Current head 3a76ae1 differs from pull request most recent head 8840409. Consider uploading reports for the commit 8840409 to get more accurate results

@@           Coverage Diff            @@
##           develop   #26826   +/-   ##
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  Coverage    40.54%   40.54%           
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  Files          799      799           
  Lines        18289    18289           
  Branches      1959     1959           
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  Hits          7415     7415           
- Misses       10578    10580    +2     
+ Partials       296      294    -2     

Flag	Coverage Δ
e2e	40.54% <ø> (ø)

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