Hovered background in List widget isn't reset when scrolling reuses an existing list item

[dweymouth]

Checklist

• I have searched the issue tracker for open issues that relate to the same problem, before opening a new one.
• This issue only relates to a single bug. I will open new issues for any other problems.

Describe the bug

If scrolling a list widget with a lot of data and a row was hovered when scrolling began, every several rows will incorrectly have the hover background set when it reuses the listItem for the row that was originally hovered.

How to reproduce

Run the example code, resize the window so a small handful of list rows are visible, hover over one, and start scrolling. Continue scrolling and note that some rows have the hover background set as they scroll by.

Screenshots

No response

Example code

package main

import (
	"strconv"

	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/widget"
)

func main() {
	myApp := app.New()
	myWindow := myApp.NewWindow("List scrolling bug")

	l := widget.NewList(
		func() int { return 100 },
		func() fyne.CanvasObject {
			return widget.NewLabel("")
		},
		func(id widget.ListItemID, lbl fyne.CanvasObject) {
			lbl.(*widget.Label).SetText(strconv.Itoa(id))
		})
	myWindow.SetContent(l)
	myWindow.ShowAndRun()

}```

### Fyne version

2.3.0

### Go compiler version

go1.19.4 darwin/amd64

### Operating system

macOS

### Operating system version

Big Sur 11.4

### Additional Information

_No response_

[andydotxyz]

Fixed on develop