fix(slide-toggle): label not being read out by JAWS (#14304)
fix(slide-toggle): label not being read out by JAWS (#14304)

Along the same lines as #4610. Adds an extra element to allow for JAWS to pick up the label.
DevVersion/material2,DevVersion/material2,DevVersion/material2,angular/components,josephperrott/material2,jelbourn/material2,Jefiozie/material2,crisbeto/material2,crisbeto/material2,Jefiozie/material2,angular/components,andrewseguin/material2,crisbeto/material2,mmalerba/material2,mmalerba/material2,crisbeto/material2,mmalerba/material2,angular/components,angular/components,DevVersion/material2,jelbourn/material2,josephperrott/material2,andrewseguin/material2,Jefiozie/material2,andrewseguin/material2,jelbourn/material2,Jefiozie/material2,jelbourn/material2,Jefiozie/material2,josephperrott/material2,mmalerba/material2,andrewseguin/material2,josephperrott/material2,josephperrott/material2,mmalerba/material2,jelbourn/material2,DevVersion/material2,andrewseguin/material2