[Feature parity]: Should menu close when focus goes to an iframe

[miroslavstastny]

Library

Web Components (@fluentui/web-components)

Describe the feature that you would like added

In FUIR9, when a user clicks into an iframe, the menu is closed, but not in WC3.
Affects not only the menu but all close-on-outside-click components.
Related discussion: #26765 (comment)

Have you discussed this feature with our team

No response

Additional context

No response

Validations

• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

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