CLI: Fix standalone detection on Windows

[medikoo]

Complementary fix to #9641

[codecov]

Codecov Report

Merging #9648 (d6b4644) into master (70fb8b9) will not change coverage.
The diff coverage is 100.00%.

❗ Current head d6b4644 differs from pull request most recent head 254c4fd. Consider uploading reports for the commit 254c4fd to get more accurate results

@@           Coverage Diff           @@
##           master    #9648   +/-   ##
=======================================
  Coverage   86.15%   86.15%           
=======================================
  Files         322      322           
  Lines       12181    12181           
=======================================
  Hits        10495    10495           
  Misses       1686     1686           

Impacted Files	Coverage Δ
lib/utils/isStandaloneExecutable.js	100.00% <100.00%> (ø)

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[pgrzesik]

👍