refactor(rust): Fix new-streaming test_lazy_parquet::test_row_index

[nameexhaustion]

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 79.85%. Comparing base (13e9717) to head (34d9425).
Report is 20 commits behind head on main.

Files with missing lines	Patch %	Lines
...tream/src/nodes/parquet_source/row_group_decode.rs	0.00%	5 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #18978   +/-   ##
=======================================
  Coverage   79.84%   79.85%           
=======================================
  Files        1523     1523           
  Lines      207409   207505   +96     
  Branches     2904     2904           
=======================================
+ Hits       165616   165711   +95     
- Misses      41246    41247    +1     
  Partials      547      547           

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