Dialogs don't work in embed live example

[hanyujie2002]

Summary

The dialog element examples were expected to work.

URL

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/dialog

Reproduction steps

1. Open https://developer.mozilla.org/en-US/docs/Web/HTML/Element/dialog
2. Click the button in https://developer.mozilla.org/en-US/docs/Web/HTML/Element/dialog#html-only_dialog example
3. the dialog doesn't disappear as expected

Expected behavior

The dialog disappear

Actual behavior

The dialog exists there

Device

Desktop

Browser

Chrome

Browser version

Stable

Operating system

Android

Screenshot

Anything else?

No response

Validations

• I have read the Community Participation Guidelines.
• I have verified that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• I have checked that this is a concrete bug. For Q&A open a GitHub Discussion.

[Josh-Cena]

Duplicate of #11460