chore: optimize dynconfig error log

[jim3ma]

Description

Related Issue

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.

[gaius-qi]

LGTM

[codecov]

Codecov Report

Merging #2771 (3f7368d) into main (c9c7100) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #2771      +/-   ##
==========================================
+ Coverage   52.35%   52.37%   +0.01%     
==========================================
  Files         157      157              
  Lines       21237    21237              
==========================================
+ Hits        11119    11122       +3     
+ Misses       9470     9469       -1     
+ Partials      648      646       -2     

Flag	Coverage Δ
Object-compatibility-e2etests	?
e2etests	?
unittests	52.37% <100.00%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
client/config/dynconfig_manager.go	62.01% <100.00%> (ø)

... and 3 files with indirect coverage changes