RegionAdmin Manage Users Bugfix

[nickviola]

…user.py)
resolves CRASM-1059. Bugfix to remove 401 error on manage users as a regionalAdmin user type.

🗣 Description

Fix users backend endpoint so regionalAdmin user type can access the manage users page.

💭 Motivation and context

🧪 Testing

As a regionalAdmin user, you should now be able to get the "Manage Users" Screen without seeing any errors.

[cduhn17]

is_global_view_admin andis_regional_admin could be optimized to make these checks at the ORM call to organize at the data layer. If this is something we want to do in the future make a ticket and note here. Other than that this PR LGTM

[hawkishpolicy]

LGTM.

[chrtorres]

LGTM