chore: using error from router http client

[chandumlg]

Description

Properly using the error returned by router http client.

Notion Ticket

https://www.notion.so/rudderstacks/8aac9087df644365acdf64e28e290153?v=6e06b0a5ade24f0aa5ffe05dc2972e84&p=41cdfc6b98034dbfb0dd1f527c1db239&pm=s

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

Base: 44.09% // Head: 43.16% // Decreases project coverage by -0.92% ⚠️

Coverage data is based on head (b47c3f6) compared to base (b6ce9b9).
Patch coverage: 50.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2628      +/-   ##
==========================================
- Coverage   44.09%   43.16%   -0.93%     
==========================================
  Files         187      186       -1     
  Lines       39255    40012     +757     
==========================================
- Hits        17308    17271      -37     
- Misses      20843    21639     +796     
+ Partials     1104     1102       -2     

Impacted Files	Coverage Δ
router/network.go	52.29% <50.00%> (+2.29%)	⬆️
enterprise/reporting/setup.go	38.09% <0.00%> (-14.29%)	⬇️
config/backend-config/namespace_config.go	70.83% <0.00%> (-3.13%)	⬇️
enterprise/reporting/reporting.go	8.33% <0.00%> (-1.44%)	⬇️
processor/processor.go	71.23% <0.00%> (-0.83%)	⬇️
services/rsources/handler.go	70.55% <0.00%> (-0.56%)	⬇️
router/batchrouter/batchrouter.go	33.87% <0.00%> (-0.27%)	⬇️
warehouse/upload.go	18.39% <0.00%> (-0.16%)	⬇️
warehouse/mssql/mssql.go	0.00% <0.00%> (ø)
warehouse/utils/utils.go	70.18% <0.00%> (ø)
... and 10 more

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