WebUI: Fix calling undefined method during reset passwords
    
    When calling reset password the whoami command is not called in batch
    command, therefore the result is different then in calling
    during reset password operation. That needs to be handled to properly
    set entity_show method which needs to be called after to gather
    data about logged in entity.
    
    https://pagure.io/freeipa/issue/7175
    
    Reviewed-By: Felipe Barreto <fbarreto@redhat.com>