web/flows: use aria-invalid attribute to better show invalid input fields

[BeryJu]

Details

REPLACE ME

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Checklist

• Local tests pass (ak test authentik/)
• The code has been formatted (make lint-fix)

If an API change has been made

• The API schema has been updated (make gen-build)

If changes to the frontend have been made

• The code has been formatted (make web)
• The translation files have been updated (make i18n-extract)

If applicable

• The documentation has been updated
• The documentation has been formatted (make website)

[netlify]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (73751e5) 92.60% compared to head (ca4fae3) 92.58%.
Report is 14 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7661      +/-   ##
==========================================
- Coverage   92.60%   92.58%   -0.03%     
==========================================
  Files         587      587              
  Lines       29075    29075              
==========================================
- Hits        26924    26918       -6     
- Misses       2151     2157       +6     

Flag	Coverage Δ
e2e	50.80% <ø> (-0.03%)	⬇️
integration	25.99% <ø> (ø)
unit	89.66% <ø> (ø)

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