Use the mousehover to switch between two states for the island

### Feature Description

Create two states (standard and hovered) for the island with different widgets on it.
Use the mousehover to switch between the two states.
Use the click to expand the widget/island.

### Use Case

With this feature, users could have an island with few widget in the standard state, and show more widgets when hovering the island.

For exemple, I could have just the the battery in the standard state, and then when hovering the island, it expands and shows other widgets like date and time and notification.

### Compositor(s)

All compositors

### If Other, please specify

_No response_

### Proposed Solution

_No response_

### Alternatives/Existing Solutions

_No response_

The issue names no files, tests, or entry points; start by locating the island implementation and the relevant UI entry point. Done would require standard and hovered states with different widgets, hover-based switching, click expansion, and support for all compositors.

Written by the indexing model from the issue text.