Incorrect weekday in week view.

[yogeshgalav]

The date 25 January 2024, is shown as Friday in week view when prop :startWeekOnSunday="true".

<template #weekday-heading="{ view, heading }">
          <span v-if="view.id === 'week'">{{ heading.date.getDate() }} ({{ heading.label }})</span>
        </template>