chore: addressing review coments from #3602

[achettyiitr]

Description

• Addressing review comments from chore: warehouse backend config refactoring #3602

Linear Ticket

https://www.notion.so/rudderstacks/wh-backend-config-d65c58fbc0054100b127b37706d04684

Security

• The code changed/added as part of this pull request won't create any security issues with how the software is being used.

[codecov]

Codecov Report

Patch coverage: 93.33% and project coverage change: +0.10% 🎉

Comparison is base (e48c98e) 68.17% compared to head (fbbc869) 68.28%.
Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3713      +/-   ##
==========================================
+ Coverage   68.17%   68.28%   +0.10%     
==========================================
  Files         320      320              
  Lines       50469    50469              
==========================================
+ Hits        34409    34461      +52     
+ Misses      13832    13779      -53     
- Partials     2228     2229       +1     

Files Changed	Coverage Δ
warehouse/backend_config.go	86.02% <66.66%> (-0.32%)	⬇️
warehouse/warehouse.go	64.02% <100.00%> (-0.04%)	⬇️

... and 14 files with indirect coverage changes

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