TabMenu: index of menu item must be accessible in slot

[forNoor]

Describe the feature you would like to see added

hi,
now in slot only item is passed. but sometimes index of elemet is required.
suppose we want to title element by index of that element.
I had to make this change in the tabmenu code to meet my needs.
<component v-else :is="$slots.item" :item="item" :index = i></component>

Is your feature request related to a problem?

No response

Describe the solution you'd like

<component v-else :is="$slots.item" :item="item"></component>

must be changed to:

<component v-else :is="$slots.item" :item="item" :index = i></component>

Describe alternatives you have considered

No response

Additional context

No response