[Bug]: Focus is not removed after hovering away from menu item in action menu

### Code of conduct

- [x] I agree to follow this project's code of conduct.

### Impacted component(s)

sp-action-menu, sp-menu-item, sp-overlay

### Library version

1.7.0

### Expected behavior

When we hover over a menu item in a menu and then hover away, it should not remain highlighted.

### Actual behavior

When we hover over a menu item in a menu and hover away, it remains highlighted.

### Screenshots

### What browsers are you seeing the problem in?

_No response_

### How can we reproduce this issue?

1. Go to https://opensource.adobe.com/spectrum-web-components/components/action-menu/#sizes
2. Open the action menu
3. Hover over a menu item and hover away

### Sample code or abstract reproduction which illustrates the problem

_No response_

### Severity

SEV 4

### Logs taken while reproducing problem

_No response_

### Would you like to track this issue in Jira?

- [x] Yes, please tell me the ticket number!

Reproduce the issue at the action-menu sizes demo, then inspect the sp-action-menu, sp-menu-item, and sp-overlay components involved in the interaction. Done means a menu item no longer remains highlighted after the pointer moves away, while normal action-menu hover behavior still works.

Written by the indexing model from the issue text.