Hide error message when value changes

[britneywwc]

Done

• Hide global error message when any field is updated
• Applied suggestions from https://github.com/canonical/ubuntu.com/pull/12759

QA

• Go to /pro/subscribe

• Click "Buy now" button

• Type invalid VAT number and check global error message displays properly

• Update VAT field with new number, error message should disappear when the field is updated

• Type invalid card number and check global error message displays properly

• Update card number with valid number, save and check that the global error message disappears

• QA with other error cases as well

Issue / Card

Fixes WD-2941

Screenshots

[If relevant, please include a screenshot.]

Help

QA steps - Commit guidelines

[webteam-app]

Demo starting at https://ubuntu-com-13640.demos.haus

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 74.41%. Comparing base (118a569) to head (6e26dd6). Report is 2907 commits behind head on main.

Files with missing lines	Patch %	Lines
.../checkout/components/UserInfoForm/UserInfoForm.tsx	0.00%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #13640      +/-   ##
==========================================
- Coverage   74.46%   74.41%   -0.06%     
==========================================
  Files         107      107              
  Lines        2847     2849       +2     
  Branches      948      948              
==========================================
  Hits         2120     2120              
- Misses        703      705       +2     
  Partials       24       24              

Files with missing lines	Coverage Δ
.../checkout/components/UserInfoForm/UserInfoForm.tsx	64.56% <0.00%> (-0.52%)	:arrow_down:

... and 1 file with indirect coverage changes

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[Onibenjo]

@britneywwc Is this PR still relevant?

[britneywwc]

I'll close this PR as it's no longer relevant, thanks @Onibenjo