fix(query): QueryReader.setRowIndex() logic correction

[zinal]

QueryReader.setRowIndex() now properly works with composite result sets.
Test added.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.02%. Comparing base (c82ade3) to head (fe7e612).

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #497      +/-   ##
============================================
+ Coverage     58.98%   59.02%   +0.04%     
+ Complexity     2220     2218       -2     
============================================
  Files           327      327              
  Lines         13427    13429       +2     
  Branches       1338     1339       +1     
============================================
+ Hits           7920     7927       +7     
+ Misses         4885     4878       -7     
- Partials        622      624       +2     

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