Escape on tooltip should not close underlying modal/menu

[bdmac]

Filing this per @keithamus request. In https://github.com/github/accessibility-audits/issues/5653 it is reported that pressing the escape key with focus on a tooltip should not close the underlying menu/modal. There was a bit of back and forth on that issue on what the correct behavior should be and also in this slack thread.

Here is the menu in question but I'm sure there are others where this applies.

[github-actions]

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