feat(avatar-group): avatar-group adds cascading prop

[Nakus0426]

close #7227

[vercel]

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[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 58.30%. Comparing base (acb01b6) to head (b7210f8).
⚠️ Report is 1 commits behind head on main.
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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7239      +/-   ##
==========================================
- Coverage   59.42%   58.30%   -1.13%     
==========================================
  Files        1178     1178              
  Lines       26109    26110       +1     
  Branches     6543     6544       +1     
==========================================
- Hits        15516    15223     -293     
+ Misses       8886     8374     -512     
- Partials     1707     2513     +806     

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