Nav/Menu - consider decoupling Flyout logic

[thatblindgeye]

Is this a new component or an extension of an existing one?
Nav/Menu

Describe the feature
Based on conversation in #7597, the logic for flyouts being decoupled (more similar to the DrilldownMenu) should be considered.

Are there visuals for this feature? If applicable, please include examples for each state and for varying widths
N/A

Any other information?
N/A

[mcarrano]

May be related to #7100

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[mcarrano]

We have #7100 in milestone 14. Should we close one of these as a duplicate @nicolethoen @tlabaj ?

[nicolethoen]

Duplicate of #7100