fix: Strengthen length check in zip3

[samestep]

This was originally added in #817 but for some reason I didn't realize that the length check condition is completely wrong.

[codecov]

Codecov Report

Merging #915 (d666a60) into main (ffd63d0) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #915   +/-   ##
=======================================
  Coverage   68.17%   68.17%           
=======================================
  Files          62       62           
  Lines        8117     8117           
  Branches     1768     1768           
=======================================
  Hits         5534     5534           
  Misses       2576     2576           
  Partials        7        7           

Impacted Files	Coverage Δ
packages/core/src/utils/Util.ts	59.48% <100.00%> (ø)

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