fix(profiles): do not set avatar during initialization

[dated]

Summary

The default avatar should not be stored.

Checklist

• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

Merging #700 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #700      +/-   ##
==========================================
- Coverage   64.93%   64.91%   -0.02%     
==========================================
  Files          99       99              
  Lines        2170     2169       -1     
  Branches      240      240              
==========================================
- Hits         1409     1408       -1     
  Misses        678      678              
  Partials       83       83              

Flag	Coverage Δ
#unit	64.91% <ø> (-0.02%)	⬇️

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Impacted Files	Coverage Δ
...ages/platform-sdk-profiles/src/profiles/profile.ts	98.78% <ø> (-0.02%)	⬇️

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