Wrong Label is deleted when user is trying to delete a newly created Label in the Sprite Library Editor

Steps to reproduce:

1. Create a 2D Project
2. Create a Sprite Library Asset and open in in the Sprite Library Editor
3. Create a Category
4. In the Labels section right click and Create a new Label
5. Create a second Label and confirm its naming
6. Without doing anything else after confirming the second Labels naming right click the second Label and select "Delete Selected Labels"

Actual results: The first Label that was created is deleted instead of the second one even though the second Label is selected and highlighted

Expected results: The Label that is highlighted is deleted

Reproducible with versions: 6000.0.5f1, 6000.0.9f1

Not reproducible with versions: 2021.3.40f1, 2022.3.36f1, 2023.1.20f1, 2023.2.20f1, 6000.0.4f1

Tested on (OS): Windows 11