chore: focus monitor directives example not working (#11660)
chore: focus monitor directives example not working (#11660)

Fixes the `focus-monitor-directives` example not working due to the `A11yModule` not being imported in the examples.
mmalerba/material2,mmalerba/material2,amcdnl/material2,Jefiozie/material2,ppham27/material2,josephperrott/material2,andrewseguin/material2,Jefiozie/material2,josephperrott/material2,amcdnl/material2,andrewseguin/material2,andrewseguin/material2,jelbourn/material2,ppham27/material2,amcdnl/material2,DevVersion/material2,angular/components,crisbeto/material2,mmalerba/material2,crisbeto/material2,Jefiozie/material2,mmalerba/material2,andrewseguin/material2,DevVersion/material2,Jefiozie/material2,jelbourn/material2,andrewseguin/material2,ppham27/material2,ppham27/material2,jelbourn/material2,jelbourn/material2,jelbourn/material2,angular/components,mmalerba/material2,josephperrott/material2,crisbeto/material2,angular/components,ppham27/material2,angular/components,amcdnl/material2,amcdnl/material2,crisbeto/material2,DevVersion/material2,DevVersion/material2,josephperrott/material2,DevVersion/material2,josephperrott/material2,Jefiozie/material2