[Bug Report][3.10.0] VCalendar does not adjust weeks for current locale

[J-Sek]

Environment

Vuetify Version: 3.10.0
Vue Version: 3.6.0-alpha.4
OS: Linux undefined (current)

Steps to reproduce

1. Use v-calendar with show-weeks and custom locale

Expected Behavior

• should be aligned with VDatePicker (first day - monday, week number based on where Thursday lands)

Actual Behavior

• first day of the week is still Sunday
• week with the first Thursday is 53 instead of 1

Reproduction Link

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

Other comments

This used to work before rewrite (v3.10.0)