fix(checkbox): poor color contrast for disabled checkbox (#14044)
fix(checkbox): poor color contrast for disabled checkbox (#14044)

Fixes some poor color contrast on the text of a disabled checkbox. The issue comes from the fact that it was using a custom color rather than the one from theme.
crisbeto/material2,mmalerba/material2,jelbourn/material2,josephperrott/material2,Jefiozie/material2,jelbourn/material2,DevVersion/material2,angular/components,DevVersion/material2,andrewseguin/material2,jelbourn/material2,Jefiozie/material2,andrewseguin/material2,andrewseguin/material2,Jefiozie/material2,josephperrott/material2,DevVersion/material2,Jefiozie/material2,andrewseguin/material2,josephperrott/material2,angular/components,crisbeto/material2,josephperrott/material2,mmalerba/material2,andrewseguin/material2,crisbeto/material2,angular/components,jelbourn/material2,DevVersion/material2,jelbourn/material2,DevVersion/material2,angular/components,Jefiozie/material2,mmalerba/material2,mmalerba/material2,josephperrott/material2,crisbeto/material2,mmalerba/material2