chore(resource-adm): Remove imports of designsystemet react components

[mgunnerud]

Description

• Import most components from @studio/components instead of from @digdir/designsystemet-react in resource admin

Related Issue(s)

• Resourceadm: remove imports of designsystemet-react components #14375

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 95.58%. Comparing base (ffec39a) to head (f7cc01d).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #14381      +/-   ##
==========================================
- Coverage   95.58%   95.58%   -0.01%     
==========================================
  Files        1869     1867       -2     
  Lines       24237    24214      -23     
  Branches     2786     2786              
==========================================
- Hits        23167    23145      -22     
+ Misses        814      813       -1     
  Partials      256      256              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.