v3x - allow using Request.sequence for arrays

[commonism]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 88.46154% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.04%. Comparing base (fbc94a6) to head (a23fd45).

Files with missing lines	Patch %	Lines
src/aiopenapi3/request.py	78.57%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #452      +/-   ##
==========================================
+ Coverage   93.92%   94.04%   +0.12%     
==========================================
  Files         103      103              
  Lines        8361     8383      +22     
==========================================
+ Hits         7853     7884      +31     
+ Misses        508      499       -9     

Flag	Coverage Δ
core	94.04% <88.46%> (+0.12%)	⬆️
extras	94.04% <88.46%> (+0.12%)	⬆️

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