[FIX] Fixed the memorization of the voting points for the CHT

[rolalaro]

The voting points vector was not reinitialized when evaluating a new center, it remembered the voting points for the same radii but other circles

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 53.84%. Comparing base (18e43f8) to head (53b3080).
Report is 22 commits behind head on master.

Files with missing lines	Patch %	Lines
...les/imgproc/src/vpCircleHoughTransform_circles.cpp	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1502      +/-   ##
==========================================
- Coverage   53.88%   53.84%   -0.05%     
==========================================
  Files         442      442              
  Lines       53793    53850      +57     
==========================================
+ Hits        28987    28996       +9     
- Misses      24806    24854      +48     

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