Fixed bug with MAP calculation

[feldlime]

There was a bug with calculating MAP metric in case when some duplicated interactions present in the test data. This Pull request fixes it.

[codecov[bot]]

Codecov Report

Merging #19 (f4a54f9) into main (7565749) will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main       #19   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           40        40           
  Lines         2021      2022    +1     
=========================================
+ Hits          2021      2022    +1     

Impacted Files	Coverage Δ
rectools/metrics/ranking.py	100.00% <100.00%> (ø)

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