Dialog component should use HTML dialog

[Bricklou]

Bug report

Current Behaviour

The current implementation for the dialog use portal with div to render the dialog.

Expected behavior

The dialog component should use the native HTML dialog behaviour to render it. This way, there will be no need to do any kind of very trick to make the z-index property work as expected.

Reproducible example

Suggested solution

The dialog component should use the HTML dialog to render, taking advantage of the #top-layer context provided by the browser to render on top of other elements on the page.

Your environment

Software	Name(s)	Version
Radix Package(s)	@radix-ui/react-dialog	^1.0.5
React	n/a	^18.2.0
Browser	Edge	123.0.2420.81
Assistive tech
Node	n/a	20.12.2
npm/yarn	pnpm	8.15.4
Operating System	Archlinux	6.8.7-arch1-1