visgraph: improve splitId(node_id,'id') : return always integer

node_id value examples:
* 'accompanying_period_124' --> 124
* '124' --> 124
* 124 --> 124

src/Bundle/ChillPersonBundle/Resources/public/vuejs/VisGraph/store.js

@@ -88,13 +88,14 @@ const store = createStore({
          */
         getFoldedPersons: (state) => (array) => {
             let folded = []
+            console.log('array', array.map(item => item.person.id))
             array.forEach(item => {
-                let id = (typeof item.person._id !== 'undefined') ? item.person._id : item.person.id
+                let id = splitId(item.person.id, 'id')
+                console.log(id)
                 if (state.personLoadedIds.includes(id)) {
                     folded.push(state.persons.filter(person => person._id === id)[0])
                 }
             })
-            //console.log('array', array.map(r => r.person.id))
             console.log('get FoldedPersons', folded.map(f => f.id))
             return folded
         },