build: dev app not picking up typography changes (#14611)
build: dev app not picking up typography changes (#14611)

Fixes the dev app CSS not being rebuilt when the typography styles change.
crisbeto/material2,crisbeto/material2,mmalerba/material2,Jefiozie/material2,mmalerba/material2,DevVersion/material2,jelbourn/material2,josephperrott/material2,josephperrott/material2,mmalerba/material2,andrewseguin/material2,andrewseguin/material2,mmalerba/material2,DevVersion/material2,DevVersion/material2,Jefiozie/material2,mmalerba/material2,angular/components,jelbourn/material2,Jefiozie/material2,andrewseguin/material2,angular/components,Jefiozie/material2,DevVersion/material2,DevVersion/material2,jelbourn/material2,jelbourn/material2,angular/components,crisbeto/material2,josephperrott/material2,andrewseguin/material2,Jefiozie/material2,crisbeto/material2,angular/components,josephperrott/material2,andrewseguin/material2,josephperrott/material2,jelbourn/material2