replace paths with cloned nodes in builtins transform

[vigneshshanmugam]

• fixes Conflict between builtins and mangle-names #568

[codecov]

Codecov Report

Merging #579 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master     #579   +/-   ##
=======================================
  Coverage   82.86%   82.86%           
=======================================
  Files          44       44           
  Lines        2900     2900           
  Branches     1012     1012           
=======================================
  Hits         2403     2403           
  Misses        303      303           
  Partials      194      194

Impacted Files	Coverage Δ
packages/babel-plugin-minify-builtins/src/index.js	89.79% <100%> (ø)	⬆️

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