Revert "Improved error checking in global addDecorator"

[igor-dv]

Related to the #1637

[Hypnosphi]

LGTM

[codecov]

Codecov Report

Merging #1716 into master will decrease coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1716      +/-   ##
==========================================
- Coverage   21.23%   21.18%   -0.06%     
==========================================
  Files         252      252              
  Lines        5698     5694       -4     
  Branches      680      689       +9     
==========================================
- Hits         1210     1206       -4     
+ Misses       3975     3954      -21     
- Partials      513      534      +21

Impacted Files	Coverage Δ
app/react/src/client/preview/client_api.js	87.5% <ø> (-1.14%)	⬇️
app/react/src/server/config/babel.js	0% <0%> (-100%)	⬇️
app/react/src/server/babel_config.js	0% <0%> (-83.88%)	⬇️
addons/storyshots/src/require_context.js	0% <0%> (ø)	⬆️
addons/knobs/src/KnobManager.js	32% <0%> (ø)	⬆️
addons/knobs/src/components/types/Boolean.js	11.62% <0%> (ø)	⬆️
addons/knobs/src/components/PropForm.js	8.51% <0%> (ø)	⬆️
lib/ui/src/modules/ui/components/menu_item.js	19.14% <0%> (ø)	⬆️
addons/knobs/src/components/types/Color.js	8% <0%> (ø)	⬆️
addons/info/src/components/PropVal.js	43.15% <0%> (ø)	⬆️
... and 19 more

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[igor-dv]

Wow, that was fast !