refactor: replace intern use of helper.randomize

[xDivisionByZerox]

Since we deprecated helpers.randomize in #506 I think we shouldn't use it internally anymore. This PR replaces all helpers.randomize calls with random.arrayElement.

[codecov]

Codecov Report

Merging #687 (535a8f0) into main (3aea453) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 535a8f0 differs from pull request most recent head d71d561. Consider uploading reports for the commit d71d561 to get more accurate results

@@           Coverage Diff           @@
##             main     #687   +/-   ##
=======================================
  Coverage   99.34%   99.34%           
=======================================
  Files        1923     1923           
  Lines      176883   176886    +3     
  Branches      897      897           
=======================================
+ Hits       175728   175731    +3     
  Misses       1099     1099           
  Partials       56       56           

Impacted Files	Coverage Δ
src/finance.ts	100.00% <100.00%> (ø)
src/helpers.ts	99.12% <100.00%> (+<0.01%)	⬆️
src/address.ts	99.10% <0.00%> (-0.01%)	⬇️