Shader Editor throws an ArgumentNullException when trying to open a ".shadergraph" file

Reproduction steps:

1. Open the user-attached "PhantomPeakArcadeMachines" project
2. In the Project window, search "shader"
3. Double-click on "OlympicsBgShader.shadergraph" to open the Shader Editor
4. Observe the outcome

Expected results: Shader Editor opens in Unity Editor without errors
Actual results: Shader Editor throws an ArgumentNullException and asks to "Select an app to open this .shadergraph file"

Reproducible with: 2021.3.32f1, 2022.2.0a8
Not reproducible with: 2022.3.14f1, 2023.2.1f1, 2023.3.0a15
Fixed in: 2022.2.0a9

Reproducible on: Windows 11 Pro
Not reproducible on: No other environments tested

Notes:

• Unable to reproduce the issue on a new project
• The issue happens with any “.shadergraph” file
• Deleting the Library folder fixes the issue