avoid error status accumulation when failing to fetch hub channel

[xiangjingli]

• I have taken backward compatibility into consideration.

https://issues.redhat.com/browse/ACM-12448

[openshift-ci]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.55%. Comparing base (7ecb081) to head (a694481).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #408      +/-   ##
==========================================
- Coverage   56.78%   56.55%   -0.24%     
==========================================
  Files          68       68              
  Lines       15243    15243              
==========================================
- Hits         8656     8620      -36     
- Misses       5725     5770      +45     
+ Partials      862      853       -9     

Flag	Coverage Δ
unit	56.55% <ø> (-0.24%)	⬇️

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