Wizard: Add warning when value wasn't added (HMS-11180)

[regexowl]

This will render a warning when the user filled in one of the LabelInput inputs, but didn't add the value with the "Add" button or with the Enter keydown.

JIRA: HMS-11180

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.24%. Comparing base (107d504) to head (93befc0).

@@           Coverage Diff           @@
##             main    #4757   +/-   ##
=======================================
  Coverage   79.24%   79.24%           
=======================================
  Files         265      265           
  Lines        7011     7040   +29     
  Branches     2547     2561   +14     
=======================================
+ Hits         5556     5579   +23     
- Misses       1357     1370   +13     
+ Partials       98       91    -7     

Flag	Coverage Δ
playwright	60.54% <72.72%> (-0.13%)	⬇️
vitest	74.33% <100.00%> (+0.10%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/Components/CreateImageWizard/LabelInput.tsx	93.39% <100.00%> (+1.17%)	⬆️
...ents/CreateImageWizard/utilities/useValidation.tsx	87.04% <100.00%> (+0.27%)	⬆️

... and 5 files with indirect coverage changes

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