Fix pathToTreePos TC

[JOOHOJANG]

What this PR does / why we need it?

• remove skip and let test case run properly

Any background context you want to provide?

What are the relevant tickets?

Fixes #

Checklist

• Added relevant tests or not required
• Didn't break anything

[hackerwins]

Could you merge the main branch to fix CI error?

[codecov]

Codecov Report

Merging #571 (2657618) into main (edf018a) will increase coverage by 0.50%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #571      +/-   ##
==========================================
+ Coverage   87.51%   88.02%   +0.50%     
==========================================
  Files          79       79              
  Lines        7820     7814       -6     
  Branches      781      781              
==========================================
+ Hits         6844     6878      +34     
+ Misses        661      622      -39     
+ Partials      315      314       -1     

Impacted Files	Coverage Δ
test/unit/util/index_tree_test.ts	100.00% <100.00%> (+21.21%)	⬆️

... and 1 file with indirect coverage changes

[hackerwins]

Thank you for your contribution.