fix(expansion-panel): disable hover highlight on non-hover devices (#12080)
fix(expansion-panel): disable hover highlight on non-hover devices (#12080)

Disables the expansion panel header's hover if the device doesn't support hovering. This prevents the header from appearing as stuck if the user taps it on a touch device.

Relates to #12030.
jelbourn/material2,mmalerba/material2,josephperrott/material2,amcdnl/material2,Jefiozie/material2,andrewseguin/material2,mmalerba/material2,crisbeto/material2,amcdnl/material2,Jefiozie/material2,Jefiozie/material2,jelbourn/material2,angular/components,DevVersion/material2,josephperrott/material2,mmalerba/material2,andrewseguin/material2,andrewseguin/material2,Jefiozie/material2,mmalerba/material2,angular/components,mmalerba/material2,crisbeto/material2,amcdnl/material2,josephperrott/material2,angular/components,josephperrott/material2,amcdnl/material2,jelbourn/material2,DevVersion/material2,DevVersion/material2,andrewseguin/material2,angular/components,amcdnl/material2,crisbeto/material2,crisbeto/material2,DevVersion/material2,josephperrott/material2,Jefiozie/material2,DevVersion/material2,andrewseguin/material2,jelbourn/material2,jelbourn/material2