added validation for CreateCustomReceiptForm and test.

[JamalAlabdullah]

Description

• Added a validation for CreateCustomReceiptForm component to show the error message as long as the user types just one character.
• Added test for it.

Related Issue(s)

• Improve validation when giving a custom receipt a name with only one character #13414
• Danger toast appears when giving a custom receipt a name with only one character #13118

Verification

• Your code builds clean without any errors or warnings
• Manual testing done (required)
• Relevant automated test added (if you find this hard, leave it and we'll help out)

Documentation

• User documentation is updated with a separate linked PR in altinn-studio-docs. (if applicable)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.72%. Comparing base (0ca075b) to head (e8cccfc).
Report is 15 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #13420   +/-   ##
=======================================
  Coverage   93.72%   93.72%           
=======================================
  Files        1438     1438           
  Lines       19929    19930    +1     
  Branches     2417     2418    +1     
=======================================
+ Hits        18679    18680    +1     
  Misses       1002     1002           
  Partials      248      248           

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[lassopicasso]

Great job @JamalAlabdullah 💪

[standeren]

When testing I see that that validation message is removed when clicking the Opprett button when allows me to post the request to backend with the single-letter-name anyway.
Maybe we should disable the Opprett button until there is a valid input?

Skjermopptak.2024-08-30.kl.11.13.37.mov

[JamalAlabdullah]

When testing I see that that validation message is removed when clicking the Opprett button when allows me to post the request to backend with the single-letter-name anyway. Maybe we should disable the Opprett button until there is a valid input?

Skjermopptak.2024-08-30.kl.11.13.37.mov

@standeren have you tested in my branch? I tested it before and tested now it works

validation.mp4

[standeren]

Tested OK in dev