Make rst editor use new default.css text styling
Make rst editor use new default.css text styling

Relates to [#OSF-4946]

rdhyee/modular-file-renderer,rdhyee/modular-file-renderer,Johnetordoff/modular-file-renderer,Johnetordoff/modular-file-renderer,TomBaxter/modular-file-renderer,felliott/modular-file-renderer,AddisonSchiller/modular-file-renderer,felliott/modular-file-renderer,AddisonSchiller/modular-file-renderer,TomBaxter/modular-file-renderer,rdhyee/modular-file-renderer,AddisonSchiller/modular-file-renderer,felliott/modular-file-renderer,CenterForOpenScience/modular-file-renderer,AddisonSchiller/modular-file-renderer,Johnetordoff/modular-file-renderer,CenterForOpenScience/modular-file-renderer,rdhyee/modular-file-renderer,CenterForOpenScience/modular-file-renderer,Johnetordoff/modular-file-renderer,TomBaxter/modular-file-renderer,TomBaxter/modular-file-renderer,felliott/modular-file-renderer,CenterForOpenScience/modular-file-renderer