[Bug Report][3.12.5] [Bug Report][3.12.5] VDateInput fires @update:model-value twice (pick + stale blur duplicate)

Environment

Vuetify Version: 3.12.5
Vue Version: 3.4.21
OS: macOS 10.15.7 (current)

Steps to reproduce

1. Render the component above.
2. Click the field, pick a date from the picker.
3. Observe the emits array.

Expected Behavior

@update:model-value fires exactly once per user interaction, carrying the selected value.

Actual Behavior

@update:model-value fires twice in rapid succession:

1. First emit: the selected date (correct).
2. Second emit (a few ms later, triggered on implicit blur as the picker
   closes): a stale value — sometimes null, sometimes the previous
   value.

If the handler has a side effect (e.g., persisting to a backend), the
second emit overwrites the first save with the stale value. The visible
bug is "the date reverts/clears moments after picking".

Reproduction Link

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

Start with the linked reproduction and the VDateInput component entry point, then trace the date-picker selection followed by the implicit blur when the picker closes. Confirm the duplicate emissions and identify the stale second value. Done means each user interaction emits the selected value exactly once without reverting or clearing it.