[TouchRipple] Fix issue #5626
[TouchRipple] Fix issue #5626

In some browsers (Firefox and Safari), the addition of the ripple
element during mousedown event was preventing the parent element from
receiving click events. This patch fixes the problem by disabling
pointer events for the ripple element.

verdan/material-ui,hai-cea/material-ui,kittyjumbalaya/material-components-web,igorbt/material-ui,ArcanisCz/material-ui,manchesergit/material-ui,ichiohta/material-ui,verdan/material-ui,janmarsicek/material-ui,igorbt/material-ui,frnk94/material-ui,pancho111203/material-ui,hai-cea/material-ui,janmarsicek/material-ui,janmarsicek/material-ui,hwo411/material-ui,frnk94/material-ui,janmarsicek/material-ui,mmrtnz/material-ui,mit-cml/iot-website-source,manchesergit/material-ui,mit-cml/iot-website-source,kittyjumbalaya/material-components-web,mit-cml/iot-website-source,pancho111203/material-ui,hwo411/material-ui,lawrence-yu/material-ui,lawrence-yu/material-ui,ichiohta/material-ui,ArcanisCz/material-ui,mmrtnz/material-ui