Fix dynamic configuration when custom errors are enabled

[aledbf]

Which issue this PR fixes:

fixes #2211

[k8s-ci-robot]

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[codecov-io]

Codecov Report

Merging #2212 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2212   +/-   ##
=======================================
  Coverage   36.98%   36.98%           
=======================================
  Files          70       70           
  Lines        4978     4978           
=======================================
  Hits         1841     1841           
  Misses       2857     2857           
  Partials      280      280

Impacted Files	Coverage Δ
internal/file/bindata.go	51.8% <ø> (ø)	⬆️

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