[BUGFIX] Filter children even if no children found after parent filtering
[BUGFIX] Filter children even if no children found after parent filtering

laurentj/lizmap-web-client,nboisteault/lizmap-web-client,3liz/lizmap-web-client,nboisteault/lizmap-web-client,rldhont/lizmap-web-client,3liz/lizmap-web-client,nboisteault/lizmap-web-client,3liz/lizmap-web-client,3liz/lizmap-web-client,nboisteault/lizmap-web-client,laurentj/lizmap-web-client,rldhont/lizmap-web-client,rldhont/lizmap-web-client,laurentj/lizmap-web-client,laurentj/lizmap-web-client,rldhont/lizmap-web-client