Only 1 animation gets imported and is named "Scene" by default when importing a .blend file

Reproduction steps:
1. Create a new project
2. Drag and drop the user-attached “BLEND_SheepLowPoly.blend” file onto the Project window to import it
3. Expand the imported file in the Project window

Expected result: 2 animations are present with appropriate names matching the ones in Blender
Actual result: 1 animation is present and is called “Scene” instead of what it's called in Blender

Reproducible with: 2021.3.33f1, 2022.3.15f1, 2023.2.4f1, 2023.3.0a19

Reproduced on: Windows 11 Pro (23H2)
Not reproduced on: No other environment tested

Notes:

• See the original reporter’s description in the internal comments to see user-suggested Unity source code changes for fixing the issue
• The expected result can be reproduced by first opening the .blend file in Blender and then exporting it with appropriate settings as an FBX file to the “Assets” folder in the Unity project