fix: resolve module ipaddr.js correctly when extensionAlias is provided

[Boshen]

closes #227

Managed to figure this out after stepping through https://github.com/webpack/enhanced-resolve/blob/main/lib/ExtensionAliasPlugin.js

[codspeed-hq]

CodSpeed Performance Report

Merging #228 will not alter performance

_{Comparing fix-extension-alias (f8ff397) with main (312d612)}

Summary

✅ 3 untouched benchmarks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.97%. Comparing base (312d612) to head (f8ff397).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #228      +/-   ##
==========================================
+ Coverage   96.95%   96.97%   +0.01%     
==========================================
  Files          11       11              
  Lines        2297     2312      +15     
==========================================
+ Hits         2227     2242      +15     
  Misses         70       70              

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