fixes validation message formatting/styling and adds smaller changes to useLanguage hook

[cammiida]

Description

Fikses some styling issues when validation messages are too long. Also did a minor refactoring of useLanguage.ts to make it a tiny bit more readable (at least for me 💁‍♀️).

Would love feedback on both the refactoring and the fix.

Related Issue(s)

• closes Validation message formatting/layout when using the Address component is not good #1951

Verification/QA

• Manual functionality testing
  • I have tested these changes manually
  • Creator of the original issue (or service owner) has been contacted for manual testing (or will be contacted when released in alpha)
  • No testing done/necessary
• Automated tests
  • Unit test(s) have been added/updated
  • Cypress E2E test(s) have been added/updated
  • No automatic tests are needed here (no functional changes/additions)
  • I want someone to help me make some tests
• UU/WCAG (follow these guidelines until we have our own)
  • I have tested with a screen reader/keyboard navigation/automated wcag validator
  • No testing done/necessary (no DOM/visual changes)
  • I want someone to help me perform accessibility testing
• User documentation @ altinn-studio-docs
  • Has been added/updated
  • No functionality has been changed/added, so no documentation is needed
  • I will do that later/have created an issue
• Support in Altinn Studio
  • Issue(s) created for support in Studio
  • This change/feature does not require any changes to Altinn Studio
• Sprint board
  • The original issue (or this PR itself) has been added to the Team Apps project and to the current sprint board
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• Labels
  • I have added a kind/* label to this PR for proper release notes grouping
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[olemartinorg]

Cleanup looks good! 🚀 🥳

[olemartinorg]

Oooh, this percy screenshot may have identified a breaking change in the language cleanup! 🤔

[sonarcloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
91.3% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud