Fix bug in PercentTrue primitive

[thehomebrewnerd]

Pull Request Description

Fix bug with default value in PercentTrue primitive

Closes #2625

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (f98704f) 99.47% compared to head (4c774c2) 99.47%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2627   +/-   ##
=======================================
  Coverage   99.47%   99.47%           
=======================================
  Files         403      404    +1     
  Lines       24201    24214   +13     
=======================================
+ Hits        24074    24087   +13     
  Misses        127      127           

Files	Coverage Δ
...ls/primitives/standard/aggregation/percent_true.py	100.00% <100.00%> (ø)
...s/aggregation_primitive_tests/test_percent_true.py	100.00% <100.00%> (ø)

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