fix(VTabs): support strict TS checks in templates

[J-Sek]

Description

• resolves problem when using strictTemplates

Markup:

<template>
  <v-app>
    <v-container>

      <v-sheet elevation="4">
        <v-tabs color="primary" v-model="tab" @update:model-value="">
          <v-tab value="one">Item One</v-tab>
          <v-tab value="two">Item Two</v-tab>
          <v-tab value="three">Item Three</v-tab>
        </v-tabs>

        <v-divider />
        <v-tabs-window v-model="tab" @update:model-value="">
          <v-tabs-window-item value="one">
            <v-sheet class="pa-5" color="purple">One</v-sheet>
          </v-tabs-window-item>
          <v-tabs-window-item value="two">
            <v-sheet class="pa-5" color="orange">Two</v-sheet>
          </v-tabs-window-item>
          <v-tabs-window-item value="three">
            <v-sheet class="pa-5" color="brown">Three</v-sheet>
          </v-tabs-window-item>
        </v-tabs-window>
      </v-sheet>


	<!-- for comparison -->
      <v-slide-group v-model="tab" @update:model-value="" />
      <v-date-picker v-model="tab" @update:model-value="" />

    </v-container>
  </v-app>
</template>

<script setup>
  import { ref } from 'vue'

  const tab = ref('one')
</script>

[KaelWD]

A few more places this might apply:

labs/VDateInput/VDateInput.tsx
104:    'update:modelValue': (val: unknown) => true,

components/VDatePicker/VDatePickerMonth.tsx
69:    'update:modelValue': (date: unknown) => true,

components/VStepper/VStepperWindow.tsx
22:    'update:modelValue': (v: unknown) => true,

components/VStepper/VStepper.tsx
96:    'update:modelValue': (v: unknown) => true,

components/VExpansionPanel/VExpansionPanels.tsx
71:    'update:modelValue': (val: unknown) => true,

components/VTabs/VTabsWindow.tsx
24:    'update:modelValue': (v: unknown) => true,

components/VTabs/VTabs.tsx
99:    'update:modelValue': (v: unknown) => true,

components/VTreeview/VTreeview.tsx
75:    'update:modelValue': (val: unknown) => true,