HelpBox visuals in the "In-App Purchasing" settings window are not aligned with the latest style guide

Steps to reproduce:

1. Create a project
2. Go to "Edit" - "Project Settings" - "In-App Purchasing"
3. Observe the displayed help box UI 

Actual results: The icon in the help box section is too big. The "Read more" link is displayed on the left side of the box

Expected results: Help box section should be updated according to the latest designs
 

Reproducible with versions: 6000.5.0a3

Tested on (OS): macOS - Tahoe 26.1

Notes: New UI changes are valid from U6.5