fix: browser field resolving relative to path to itself

[Boshen]

fixes #32

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (42c89e3) 94.12% compared to head (9e2ab5b) 94.13%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #34      +/-   ##
==========================================
+ Coverage   94.12%   94.13%   +0.01%     
==========================================
  Files          11       11              
  Lines        2263     2268       +5     
==========================================
+ Hits         2130     2135       +5     
  Misses        133      133              

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[codspeed-hq]

CodSpeed Performance Report

Merging #34 will not alter performance

_{Comparing browser-field-resolve-self (9e2ab5b) with main (b3d8f7c)}

Summary

✅ 2 untouched benchmarks