[Bug Report][3.7.1] v-treeview class="v-list-group--id-[object Object]" when return-object true

[digitalniweb]

Environment

Vuetify Version: 3.7.1
Vue Version: 3.5.5
Browsers: Firefox 130.0
OS: Windows 10

Steps to reproduce

add return-object to treeview with items with children.

Expected Behavior

not getting v-list-group--id-[object Object] . Maybe getting id 'v-list-group--1' of the parent or nothing, just 'v-list-group' or 'v-list-group--treeview'

Actual Behavior

getting v-list-group--id-[object Object]

Reproduction Link

https://play.vuetifyjs.com/#...