Addon actions: replace eval with function name assignment

[Hypnosphi]

Issue: #1123

Although one can't assign function names directly like fn.name = 'foo', it's possible to do that using Object.defineProperty

[codecov]

Codecov Report

Merging #2321 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master    #2321   +/-   ##
=======================================
  Coverage   21.19%   21.19%           
=======================================
  Files         283      283           
  Lines        6156     6156           
  Branches      722      722           
=======================================
  Hits         1305     1305           
  Misses       4310     4310           
  Partials      541      541

Impacted Files	Coverage Δ
addons/actions/src/preview.js	50% <100%> (ø)	⬆️
app/react/src/server/config/babel.js	0% <0%> (-100%)	⬇️
app/react/src/server/babel_config.js	0% <0%> (-77.42%)	⬇️
app/react/src/server/utils.js	0% <0%> (-53.58%)	⬇️
app/vue/src/server/utils.js	53.57% <0%> (+53.57%)	⬆️
app/vue/src/server/babel_config.js	77.41% <0%> (+77.41%)	⬆️
app/vue/src/server/config/babel.js	100% <0%> (+100%)	⬆️

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