Support dropdowns-dividers for row acrions.

[maliming]

https://support.abp.io/QA/Questions/6207/DataTables-RowActions-button-divider#answer-3a0f4ef8-32a2-353e-9810-1c0e8ea3cc9a
https://getbootstrap.com/docs/5.0/components/dropdowns/#dividers

{
    text: l('Edit'),
    visible: abp.auth.isGranted(
        'AbpIdentity.Users.Update'
    ),
    action: function (data) {
        _editModal.open({
            id: data.record.id,
        });
    },
},
{
    divider: true,
    dividerHtml: function () {
        //Optional
    },
},
{
    text: l('Permissions'),
    visible: abp.auth.isGranted(
        'AbpIdentity.Users.ManagePermissions'
    ),
    action: function (data) {
        _permissionsModal.open({
            providerName: 'U',
            providerKey: data.record.id,
            providerKeyDisplayName: data.record.userName
        });
    },
}

[maliming]

Temporary solution:

{
    displayNameHtml: true,
    text: function (data) {
        return '<li><hr class="dropdown-divider"></li>';
    }
}