Enterprise policy to prevent user from changing their email address

For security reasons, we wish to prevent the end user of an organization from changing their email address. This is something I brought up a year ago in another thread (Allow Admin to Delete User (including personal vault) - #12 by martin.tig) but apparently forgot to submit a request until now.

I searched and found How to disable "Change Email" in Enterprise which discusses this exact issue as well, but no existing request.

So this is my request to fix this issue.