[docs] Fix missing href for AppDrawerNavItems

[eps1lon]

The nav items didn't include the common affordances for links (e.g. open new tab, copy link adress etc).

Before: https://6124b8cbdf676e0008cc3e43--material-ui.netlify.app/components/box/
After: https://deploy-preview-27936--material-ui.netlify.app/components/box/

Bisecting lead to 49f21f8 which makes sense since the child element of next/link no longer had the a type and therefore needed an explicit passHref.

It's unclear why passHref was a supported prop. It wouldn't be useful since the child type is controlled by the implementation not its usage. But we may have destructured it in NextLinkComposed because its callsites didn't properly filter passHref. This is a responsibility of the callsite of NextLinkComposed. Good thing is that passHref leaking to an a would trigger React warnings so we'll see if this is/was ever an issue.

[eps1lon]

Never used so don't export it.

[mui-pr-bot]

No bundle size changes (experimental)

Generated by 🚫 dangerJS against 2fec1ef

[siriwatknp]

👍

[oliviertassinari]

Thoughts:

1. @siriwatknp Do we really need const Anchor = styled('a')({ cursor: 'pointer' });? First, this cursor pointer is suspicious/redundant. Aren't the user agents already adding it for valid links? Second, the responsibility of the NextLinkComposed is to implement the navigation behavior, not the styles, adding styled() for the sx prop seems to leak the intended abstraction, I think that it should only be in Link.
2. If the concerns in 1. are not valid, should we update the /examples too with this revisited implementation of the Next.js' Link component? e.g. for next-typecript. So far we have used the docs to dog food this component and shared it with the community as a code snippet.
   It also makes me think about https://twitter.com/SquishyDough/status/1390326410972176391, getting this Link component right might be tricky for the community.
3. "It's unclear why passHref was a supported prop." Agree 👍 the prop doesn't seem relevant in the context of NextLinkComposed.