ShaderGraph tabs persist to projects that do not have that shader graph

Steps to reproduce:

1. Create a new URP project
2. Right-click Project > Create > ShaderGraph > URP > Lit Shader Graph
3. Open this in Shader Editor.
4. Ensure the tab is in a group, and then click off the tab so that another is focused instead of it.
5. Create a new URP project. Observe your layout.

Actual results: The shader graph tabs you had previously opened carry over into the layout of the new project. When you click on the tab, it disappears.

Expected results: These tabs should not exist in the layout of a new project.

Reproducible with versions: 6000.0.23f1, 2022.3.49f1, 2022.3.1f1

Not reproducible with versions: 2022.3.0f1

Can’t test with versions:

• 2022.2.0a1 - project wouldn't open
• 2021.3 - not supported on Ubuntu 24.04

Tested on (OS): Ubuntu 24.04

Notes:

• If you don't do Step 4, this issue still occurs but is harder to catch as it opens when the project opens and then immediately disappears.
  • The new project in step 5 doesn't necessarily have to be the same editor version, but the above might happen.
• Attached .mp4 of this occurring with a new project, but I think I've seen it happen when opening existing projects too.