This has been resolved in iOS 17.0 beta4 and Xcode 15beta5 released today.
It seems to be mentioned in ReleaseNotes.
https://developer.apple.com/documentation/ios-ipados-release-notes/ios-ipados-17-release-notes
Resolved Issues
Fixed issue where loadProduct(withParameters:completionBlock:) was called from a background thread. (110640574)
Topic:
App & System Services
SubTopic:
Core OS
Tags: