Disable Terser inline 3 option

[Timer]

Fixes #5250

[kzc]

@Timer Since we're in this file, this mapbox webworkify typeof global bug:

create-react-app/packages/react-scripts/config/webpack.config.prod.js

Lines 147 to 151 in f166144

	// Disabled because of an issue with Uglify breaking seemingly valid code:
	// https://github.com/facebook/create-react-app/issues/2376
	// Pending further investigation:
	// https://github.com/mishoo/UglifyJS2/issues/2011
	comparisons: false,

was recently fixed in mapbox/mapbox-gl-js#6956

so the comparisons: false workaround is no longer needed for the latest versions of mapbox.

If you wish to support older versions of mapbox I'd recommend this more constrained workaround and better description:

angular/angular-cli@ef52675