* This change introduces two new optional parameters to the 'allusers'
API call named 'excludenamed' and 'excludetemp' that allows filtering
accounts based on whether they're named accounts or temporary
accounts. This is tested by using the temporary matchPattern
configured with $wgAutoCreateTempUser.
* User widgets that call 'allusers' have been updated so that
'excludenamed' and 'excludetemp' can be optionally set so that named
or temporary accounts may not returned with user suggestions.
Bug: T332030
Change-Id: I6563ae610017fd1cd35c36ba65906041f7f68c4b