[Bug Report][2.6.7] Expansion Panel uses aria-expanded attribute on a div

[marjev]

Environment

Vuetify Version: 2.6.7
Vue Version: 2.7.7
Browsers: Chrome 103.0.0.0
OS: Mac OS 10.15.7

Steps to reproduce

1. Install a tool similar to Axe DevTools. Alternatively, add a Vuetify expansion panel into a Storybook story and install the Accessibility addon.
2. Screen a page that includes an Expansion panel.

Expected Behavior

a11y screening shouldn't fail on the following criteria.
The button should be the element that has aria-expanded attribute.

Actual Behavior

Div element wrapping an expansion panel (div with the v-expansion-panel class on it) has aria-expanded attribute attached to it.

Reproduction Link

https://codepen.io/marjev/pen/MWVvRmm

Other comments

See this Vanilla JS example which demonstrates HTML which doesn't fail this screening.

[Harm-Nullix]

This is also the case in the NEXT.vuetify:

    "axe-core": "4.6.3"
    "vuetify": "3.1.4"