fix: Fix offset out of range for creating Trie index

[xiaocai2333]

issue: #35550

[smellthemoon]

/lgtm

[xiaocai2333]

rerun ut

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 81.45%. Comparing base (4d69898) to head (666b094).
Report is 36 commits behind head on master.

Files	Patch %	Lines
internal/core/src/index/StringIndexMarisa.cpp	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #35553      +/-   ##
==========================================
+ Coverage   72.38%   81.45%   +9.07%     
==========================================
  Files        1234     1229       -5     
  Lines      145723   146128     +405     
==========================================
+ Hits       105475   119028   +13553     
+ Misses      35691    22552   -13139     
+ Partials     4557     4548       -9     

Files	Coverage Δ
internal/core/src/index/StringIndexMarisa.cpp	65.90% <0.00%> (+65.90%)	⬆️

... and 289 files with indirect coverage changes

[czs007]

/approve
/lgtm

[sre-ci-robot]

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