[Modal] Modal has aria-hidden set to true, even if keepMounted is true, and it's partly visible.

[tech-meppem]

Duplicates

• I have searched the existing issues

Latest version

• I have tested the latest version

Current behavior 😯

aria-hidden is always set to true for a closed drawer.
However, in situations (like with Swipeable Edge Drawers), you might not want to have this set.
Overriding via Props does not work, and manually setting is via setAttribute only works until the Modal is updated.

Expected behavior 🤔

If you pass in "aria-hidden" as a prop, it should use that value, instead of always being true.

This line in ModalUnstyled.js:
ariaHidden(modalRef.current, true);
should probably be changed to:
if(props.ariaHidden != false) ariaHidden(modalRef.current, true);
or
ariaHidden(modalRef.current, props.ariaHidden);

After more investigation and testing, just this alone doesn't resolve the problem.

Steps to reproduce 🕹

No response

Context 🔦

No response

Your environment 🌎

`npx @mui/envinfo`

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  Output from `npx @mui/envinfo` goes here.