Disable file:// access in MS Edge

I am looking for a way to disable access to view files in MS Edge using the file:// protocol. We have an environment we need to highly restrict. Users have already been blocked from accessing or reading local or unc paths in File Explorer; however, those same user accounts are able to view the local and unc directories in MS Edge using File://

I have looked over every policy setting in the edge.admx files and nothing appears to disable this ability. Nor can I find anything online about how to disable it.