[Bug Report][3.7.1] v-combobox persistent-placeholder doesent work

[Muslix]

Environment

Vuetify Version: 3.7.1 Vue Version: 3.4.38 Browsers: Chrome 128.0.0.0 OS: Windows 10

Steps to reproduce

After selecting an item the placeholder disappears but it should be there with the persistent tag

Expected Behavior

Placeholder should stay at the end of the list

Actual Behavior

Placeholder disappears

Reproduction Link

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

[KaelWD]

Placeholder is only visible when the field is empty.

[Muslix]

persistent-placeholder | boolean | false

Forces placeholder to always be visible.

Forces placeholder to always be visible.

With the persistent-placeholder property, the placeholder should remain visible at all times, even when the field is not empty, as mentioned in the API documentation.

https://vuetifyjs.com/en/api/v-combobox/