chore(VDatePicker): less flaky test

Author: J-Sek

packages/vuetify/src/components/VDatePicker/__tests__/VDatePicker.spec.browser.tsx

@@ -31,6 +31,7 @@ describe('VDatePicker', () => {
     await userEvent.click(await screen.findByTestId('year-btn'))
     await userEvent.click(await screen.findByText('2025'))
     await userEvent.click(await screen.findByTestId('month-btn'))
+    await commands.waitStable('.v-date-picker-months')
     await userEvent.click(await screen.findByText('Jan'))
     await commands.waitStable('.v-date-picker-month__days')
     await userEvent.click(await screen.findByText(7))