fix(MenuTrigger): closeOnSelect for keyboard users

[johnsoter13]

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Description

Close on select only works for clicks, but not keyboard presses
The full description of the changes made in this request.

• Added onKeyDown handling to close menu when user hits space or enter and onCloseSelect is true

Links

https://jira-eng-gpk2.cisco.com/jira/browse/SPARK-549363
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[nataliadelmar]

Hmmm maybe Im not getting the purpose of this change, but I can see in master storybook that closeOnSelect works for both click and kb

Screen.Recording.2024-08-13.at.1.52.25.PM.mov