Remove setters dependency of IndexLoadingConfig class in Test Classes

[deepthi912]

Subtask of #14106

Continuation to removing setters from IndexLoadingConfig

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.83%. Comparing base (59551e4) to head (5699477).
Report is 1170 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #14201      +/-   ##
============================================
+ Coverage     61.75%   63.83%   +2.08%     
- Complexity      207     1536    +1329     
============================================
  Files          2436     2622     +186     
  Lines        133233   144396   +11163     
  Branches      20636    22104    +1468     
============================================
+ Hits          82274    92178    +9904     
- Misses        44911    45432     +521     
- Partials       6048     6786     +738     

Flag	Coverage Δ
custom-integration1	100.00% <ø> (+99.99%)	⬆️
integration	100.00% <ø> (+99.99%)	⬆️
integration1	100.00% <ø> (+99.99%)	⬆️
integration2	0.00% <ø> (ø)
java-11	63.79% <ø> (+2.08%)	⬆️
java-21	63.72% <ø> (+2.09%)	⬆️
skip-bytebuffers-false	63.80% <ø> (+2.06%)	⬆️
skip-bytebuffers-true	63.69% <ø> (+35.97%)	⬆️
temurin	63.83% <ø> (+2.08%)	⬆️
unittests	63.83% <ø> (+2.08%)	⬆️
unittests1	55.50% <ø> (+8.61%)	⬆️
unittests2	34.36% <ø> (+6.63%)	⬆️

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