fix: escaped columns in dataskippingstatscolumns

[ion-elgreco]

Description

We parse the indents and then join them again with "." since the parquet SchemaDescriptor is using full paths.

Related Issue(s)

• closes Stats missing for dataSkippingStatsColumns when escaping column name #2849

[codecov]

Codecov Report

Attention: Patch coverage is 5.88235% with 16 lines in your changes missing coverage. Please review.

Project coverage is 72.49%. Comparing base (f05b2bf) to head (79ae537).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/core/src/writer/stats.rs	5.88%	16 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2855      +/-   ##
==========================================
- Coverage   72.53%   72.49%   -0.04%     
==========================================
  Files         132      132              
  Lines       40029    40046      +17     
  Branches    40029    40046      +17     
==========================================
- Hits        29036    29033       -3     
- Misses       9140     9158      +18     
- Partials     1853     1855       +2     

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