fix: custom userID not being added when specified in zitadel.org.v2.AddOrganizationRequest.AddOrganization() request (#9334)

# Which Problems Are Solved

When specifying a `user_id` as a human admin in
`zitadel.org.v2.AddOrganizationRequest.AddOrganization()` the `user_id`
specified in the request should have been used, before it was being
ignored, this has been fixed with this PR

# Additional Context
- Closes https://github.com/zitadel/zitadel/issues/9308

---------

Co-authored-by: Iraq Jaber <IraqJaber@gmail.com>

internal/api/grpc/org/v2/org.go

@@ -57,6 +57,7 @@ func addOrganizationRequestAdminToCommand(admin *org.AddOrganizationRequest_Admi
 		if err != nil {
 			return nil, err
 		}
+
 		return &command.OrgSetupAdmin{
 			Human: human,
 			Roles: admin.GetRoles(),