fix(list): clickable list-items should show a focus effect.
fix(list): clickable list-items should show a focus effect.

* Currently the focus effect was completely disabled for clickable list-items, because there were problems with the dialog focus restore.

This focus effect, should be re-enabled on the clickable list items.
But we should also keep track of the dialog focus restore issue. (See #7963)

Fixes #7960. Closes #7964

hodeyp/material,bluebirdtech/material,bluebirdtech/material,Frank3K/material,ServiceManagementGroup/material,david-gang/material,welkinhealth/material,david-gang/material,epelc/material,DevVersion/material,colinskow/material,miguelcobain/material,colinskow/material,colinskow/material,j3ski/material,daniel-nagy/material,dmitriz/material,colinskow/material,angular/material,ilovett/material,graingert/material,clshortfuse/material,HarrisCorp/material,ServiceManagementGroup/material,welkinhealth/material,profoundry-us/material,DevVersion/material,ilovett/material,j3ski/material,miguelcobain/material,oostmeijer/material,imjoeco/material,Frank3K/material,epelc/material,HarrisCorp/material,crisbeto/material,DevVersion/material,hodeyp/material,crisbeto/material,bluebirdtech/material,pwistbac/material,angular/material,welkinhealth/material,HipsterZipster/material,programmist/material,crisbeto/material,HarrisCorp/material,vertazzar/material,gkalpak/material,crisbeto/material,hayloft/material,imjoeco/material,hayloft/material,graingert/material,gkalpak/material,bluebirdtech/material,epelc/material,ErinCoughlan/material,gkalpak/material,dmitriz/material,Frank3K/material,ilovett/material,Splaktar/material,ServiceManagementGroup/material,marekmicek/material,ErinCoughlan/material,acoreyj/material,Frank3K/material,Splaktar/material,SamDLT/material,graingert/material,acoreyj/material,j3ski/material,dmitriz/material,oostmeijer/material,Splaktar/material,pwistbac/material,david-gang/material,oostmeijer/material,welkinhealth/material,marekmicek/material,HarrisCorp/material,acoreyj/material,programmist/material,ErinCoughlan/material,programmist/material,HipsterZipster/material,marekmicek/material,hodeyp/material,david-gang/material,marekmicek/material,ilovett/material,clshortfuse/material,dmitriz/material,DevVersion/material,SamDLT/material,daniel-nagy/material,clshortfuse/material,epelc/material,daniel-nagy/material,HipsterZipster/material,hodeyp/material,miguelcobain/material,gkalpak/material,angular/material,profoundry-us/material,hayloft/material,j3ski/material,hayloft/material,angular/material,ServiceManagementGroup/material,profoundry-us/material,daniel-nagy/material,oostmeijer/material,SamDLT/material,graingert/material,clshortfuse/material,profoundry-us/material,vertazzar/material,imjoeco/material,ErinCoughlan/material,pwistbac/material,vertazzar/material,Splaktar/material,imjoeco/material,HipsterZipster/material,acoreyj/material,pwistbac/material,vertazzar/material,miguelcobain/material,SamDLT/material,programmist/material