POC Create file cache handle on file cache reader init

[Tulsishah]

Description

Link to the issue in case of a bug fix.

Testing details

1. Manual - NA
2. Unit tests - NA
3. Integration tests - NA

Any backward incompatible change? If so, please explain.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.12%. Comparing base (b6d5daa) to head (09793d2).

Additional details and impacted files

@@                        Coverage Diff                        @@
##           create_interfaces_for_mocking    #3197      +/-   ##
=================================================================
+ Coverage                          78.07%   78.12%   +0.05%     
=================================================================
  Files                                128      128              
  Lines                              17256    17272      +16     
=================================================================
+ Hits                               13472    13494      +22     
+ Misses                              3333     3327       -6     
  Partials                             451      451              

Flag	Coverage Δ
unittests	78.12% <100.00%> (+0.05%)	⬆️

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