fix: detect web worker

[robertsLando]

Fixes #1709

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (df78893) 81.03% compared to head (871016e) 81.03%.

❗ Current head 871016e differs from pull request most recent head 31cf07a. Consider uploading reports for the commit 31cf07a to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1711   +/-   ##
=======================================
  Coverage   81.03%   81.03%           
=======================================
  Files          21       21           
  Lines        1366     1366           
  Branches      323      323           
=======================================
  Hits         1107     1107           
  Misses        182      182           
  Partials       77       77           

Files	Coverage Δ
src/lib/is-browser.ts	66.66% <0.00%> (ø)

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