[Bug Report][3.6.6] The item-children prop doesn't work in combination with load-children anymore

[JeppeKnockaert]

Environment

Vuetify Version: 3.6.6 Last working version: 3.6.5 Vue Version: 3.4.27 Browsers: Safari 17.5 OS: Mac OS 10.15.7

Steps to reproduce

Create a v-treeview using both the item-children prop and the load-children prop

Expected Behavior

The load-children function gets called

Actual Behavior

The load-children function never gets called

Reproduction Link

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