Hub doesn't auto update to the newest Beta when production Channel is set to Beta

Steps to reproduce:

1. Open Unity Hub
2. Navigate to Settings > Advanced 
3. Set "Channels" to Beta
4. Restart Hub

Actual results: Hub doesn't update to the newest Beta (3.15.4-beta.1 at this time)

Expected results: Hub updates to the newest Beta

Reproducible with versions: 3.15.3

Tested on (OS): Windows 11, macOS 15.7.2