Install the react-router-dom-v5-compat package

[bobsilverberg]

Fixes #11860

We should hold off merging this until https://github.com/mozilla/addons-frontend/issues/11847 is verified on dev, so we're not stuck trying to figure what caused a problem, if one is found.

[codecov[bot]]

Codecov Report

Base: 98.48% // Head: 98.48% // No change to project coverage :thumbsup:

Coverage data is based on head (407085c) compared to base (59c2129). Patch coverage: 50.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #11861   +/-   ##
=======================================
  Coverage   98.48%   98.48%           
=======================================
  Files         254      254           
  Lines        9967     9967           
  Branches     3002     3002           
=======================================
  Hits         9816     9816           
  Misses        143      143           
  Partials        8        8           

Impacted Files	Coverage Δ
src/amo/components/Root/index.js	85.71% <50.00%> (ø)

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[bobsilverberg]

I'm not sure we even want to do this. I was unable to get the compat package to actually work with a v6 route, so at this point it's not doing anything for us. I will leave this here for now.

[bobsilverberg]

I'm going to close this as well. If we do end up implementing this compat package it's going to look a bit different.