fix(css): Adjust status icon colors to Nextcloud 32 variable names

[mejo-]

Fixes: #7717

🖼️ Screenshots

🏚️ Before	🏡 After

🏁 Checklist

• Code is properly formatted (npm run lint / npm run stylelint / composer run cs:check)
• Sign-off message is added to all commits

[mejo-]

/backport to stable32

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.31%. Comparing base (adfd7b7) to head (bd770de).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7718   +/-   ##
=======================================
  Coverage   59.31%   59.31%           
=======================================
  Files         503      503           
  Lines       39258    39258           
  Branches     1130     1130           
=======================================
  Hits        23285    23285           
  Misses      15865    15865           
  Partials      108      108           

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.