[Hotfix] Use published webpack 4 compatible fork of react-dev-utils

[Hypnosphi]

Issue: #3148 (comment)

[codecov]

Codecov Report

Merging #3312 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master    #3312   +/-   ##
=======================================
  Coverage   35.63%   35.63%           
=======================================
  Files         472      472           
  Lines       10121    10121           
  Branches      935      952   +17     
=======================================
  Hits         3607     3607           
+ Misses       5924     5908   -16     
- Partials      590      606   +16

Impacted Files	Coverage Δ
...p/mithril/src/server/config/webpack.config.prod.js	0% <ø> (ø)	⬆️
app/mithril/src/server/config/webpack.config.js	0% <ø> (ø)	⬆️
app/polymer/src/server/config/webpack.config.js	0% <ø> (ø)	⬆️
app/react/src/server/config/webpack.config.js	0% <ø> (ø)	⬆️
app/vue/src/server/config/webpack.config.js	0% <ø> (ø)	⬆️
app/react/src/server/config/webpack.config.prod.js	0% <ø> (ø)	⬆️
app/angular/src/server/config/webpack.config.js	0% <ø> (ø)	⬆️
...p/polymer/src/server/config/webpack.config.prod.js	0% <ø> (ø)	⬆️
app/vue/src/server/config/webpack.config.prod.js	0% <ø> (ø)	⬆️
...p/angular/src/server/config/webpack.config.prod.js	0% <ø> (ø)	⬆️
... and 66 more

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[shilman]

@Hypnosphi how do I see the changes to react-dev-utils?

[shilman]

Nevermind, assuming it's: https://github.com/facebook/create-react-app/pull/4077/files