[stable8] fix(NcFormGroup): decrease gap between label and content

[ShGKme]

☑️ Resolves

• Manual backport: fix(NcFormGroup): decrease gap between label and content #7775

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 44.88%. Comparing base (4264435) to head (f529c00).
⚠️ Report is 2 commits behind head on stable8.

Additional details and impacted files

@@           Coverage Diff            @@
##           stable8    #7782   +/-   ##
========================================
  Coverage    44.88%   44.88%           
========================================
  Files          180      180           
  Lines         4465     4465           
  Branches      1169     1169           
========================================
  Hits          2004     2004           
  Misses        2366     2366           
  Partials        95       95           

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