Steps to reproduce:
1. Open any Project with the new Input System Package Installed
2. Navigate to Edit > Project Settings > Input System Package or Open an Input Actions Asset
3. In the Actions section create a New Action with a Button Type
4. Select the default Binding and in the Binding Properties Panel click on the "Listen" button for path
5. Hold down the right mouse button and observe the Listener list
6. Hold down the left mouse button and observe the Listener list

Actual results: The left mouse button is not being listened to or is not being displayed

Expected results: All buttons can be listened to

Reproducible with versions: 1.8.0, 1.14.2

Tested on (OS): Windows 11