Invite parent user with invalid user store domain cause internal server error

[sadilchamishka]

Describe the issue:
$subject

How to reproduce:

'https://localhost/t/<tenant-domain>/o/api/server/v1/guests/invite' \
--header 'Accept: application/json, text/plain, */*' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer 2ff18a88-28a9-3869-997d-fd649d94e12b' \
--data-raw '{
    "roles": [
        "<shared-console-administrator-role-id>"
    ],
    "usernames": [
        "<username>"
    ],
    "userDomain" : "<INVALID-DOMAIN>"
}'

Expected behavior:

A client exception should be returned.