#381 Bug: Demo review feedback issues in Registry Detail page

[xingzhang-suse]

For current UX design, Rancher UI's KeyValue, KeyValueRow and Preview do not meet the requirement.
We temporarily copy the 3 component to modify the style on KeyValue, KeyValueRow.
Additionally, we replace the Content into CodeMirror to show readonly Yaml text in Preview component.

[codecov]

Codecov Report

❌ Patch coverage is 14.12104% with 298 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.41%. Comparing base (c341fb7) to head (fbef9bc).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #382      +/-   ##
==========================================
- Coverage   89.74%   86.41%   -3.33%     
==========================================
  Files          85       86       +1     
  Lines       11840    12069     +229     
  Branches      952      952              
==========================================
- Hits        10626    10430     -196     
- Misses       1187     1612     +425     
  Partials       27       27              

🚀 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.