[5.x] Hide read only and computed fields in user creation wizard (#11635)

Author: duncanmcclean

src/Http/Controllers/CP/Users/UsersController.php

@@ -140,6 +140,7 @@ public function create(Request $request)
 
         $additional = $fields->all()
             ->reject(fn ($field) => in_array($field->handle(), ['roles', 'groups', 'super']))
+            ->reject(fn ($field) => in_array($field->visibility(), ['read_only', 'computed']))
             ->keys();
 
         $viewData = [