[Bug Report][3.6.1] Checkboxes in VDataTable is not showing as selected when returning an object on item-value

[joelmandell]

Environment

Vuetify Version: 3.6.1 Last working version: 3.5.18 Vue Version: 3.4.26 Browsers: Edge 124.0.0.0 OS: Windows 10

Steps to reproduce

If you select the checkbox to select all items in the v-data-table, they are not selected. But the ref() that contains them (selected) has items on it. This happens with :item-value="item => item" if you instead do :item-value="item => item.name", it works.

Expected Behavior

The checkboxes should be selected

Actual Behavior

Only the checkbox in the v-data-table header is selected.

Reproduction Link

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