Remove "Cannot update your own roles" warning (#14440)

src/OrchardCore.Modules/OrchardCore.Users/Drivers/UserRoleDisplayDriver.cs

@@ -96,17 +96,15 @@ public override IDisplayResult Edit(User user)
 
         public override async Task<IDisplayResult> UpdateAsync(User user, UpdateEditorContext context)
         {
-            var model = new EditUserRoleViewModel();
-
             // The current user cannot alter their own roles. This prevents them removing access to the site for themselves.
             if (_httpContextAccessor.HttpContext.User.FindFirstValue(ClaimTypes.NameIdentifier) == user.UserId
                 && !await _authorizationService.AuthorizeAsync(_httpContextAccessor.HttpContext.User, StandardPermissions.SiteOwner))
             {
-                await _notifier.WarningAsync(H["Cannot update your own roles."]);
-
-                return Edit(user);
+                return null;
             }
 
+            var model = new EditUserRoleViewModel();
+
             if (await context.Updater.TryUpdateModelAsync(model, Prefix))
             {
                 var roles = await GetRoleAsync();