Paging on listing user under some role doen not work properly.

[markogl]

When click on pager on RoleUsers page you get error:

Pager does not include role guid into search

[skoruba]

You are right, thank you! can you send a PR?

[snapcoyote]

It seems the pager on the RoleUsers page requires a roleId parameter. As a ugly workaround fix, I updated the pager.cshtml to set a variable for roleId:

var roleId = Context.Request.Query["roleId"];

And then added an route attribute for roleId to all the paging links: asp-route-roleId="@roleId"