[@material/react-switch] Missing aria-checked attribute in input element

[heyitsjhu]

Hi,

When I render the Switch component in Storybook with the A11Y addon, I get the following accessibility violation: "Required ARIA attribute not present: aria-checked."

I tried adding aria-checked and ariaChecked as Switch component props to see if it gets passed down directly, but it doesn't appear so. However, when I update the HTML directly and add in the attribute, the error in storybook goes away.

Is this something we can add to the component or is there a reason why it's omitted from the element? I'm also happy to take a stab at creating a pull request if we decided to add the attribute. :)

[stefcot]

Just try

          inputProps={{
            'aria-checked': toggled || undefined,
          }}```