demo(input): fix regex for phone validation is not correct
demo(input): fix regex for phone validation is not correct

This adds a regex that works fine with expected pattern

Closes #8068

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