macOS: Package Manager does not create a default cache directory for Asset downloads

Steps to reproduce:

1. From macOS, delete Package Manager's default asset cache directory (the Unity folder). The default cache location is listed here. For macOS, it would be - '/Users/<username>/Library/Unity'
2. Launch a Unity project
3. Open the Preferences window and select the Package Manager tab

Actual results:

• The default cache folder for Assets is not created
• The issue prevents asset downloads unless the directory is created manually

Expected results:
The default cache folder for Assets is automatically created

Environment

Repro with versions

• macOS
• 6000.0.b14, 6000.0.3f1
• On Ubuntu, the regression point is different. The default directory is not created automatically on any supported stream (2021.3-6000) However, when 2021.3 is used, the cache folder is created when downloading assets via Package Manager window. This stops working with 2022.3 and onwards. With those versions, the Editor throws an error and fails to create a directory or download the assets.

Not reproducible with versions

• Windows 11
• 2021.3.38f1, 2022.3.30f1, 2023.2.20f1, 6000.0.b13