Imported Object section disappears after deselecting file from the Materials tab

Steps to reproduce:

1. Create a new URP project.
2. Import the files in the attached Tree.zip.
3. Select the Decal_and_Mesh_Detail.st file in Project view.
4. In the Import Settings (view in Inspector), select the Materials tab. Scroll down and see the "Imported Object" section.
5. Select another file in the Project view, then reselect Decal_and_Mesh_Detail.st.
6. Scroll down in the Inspector and look for the "Imported Object" section.

Actual results: The "Imported Object" section is no longer there, and does not reappear if you deselect and reselect.

Expected results: The "Imported Object" section does not disappear.

Reproducible with versions: 6000.0.21f1, 2022.3.47f1, 2021.3.44f1, 2021.2.0a1

Tested on (OS): MacOS Sonoma 14.6.1

Notes:

• This section will not return until you select the Model tab, then deselect and reselect the .st file.
• This section will not be visible if your imported object opens on the Material tab immediately after import.
• This also occurs with .fbx imports, so it is not SpeedTree specific.