This new cleanup rule is missing a Detect/DetectFile, so unfortunately it will be displayed on systems without Apple software installed.
[Apple Install Files]
ID=3016
LangSecRef=3021
LangRef=9205
Default=True
FileKey1=%CommonAppData%\Apple Computer\Installer Cache|*.*|RECURSE
Please correct this with the next update. Many thanks to you!
By the way, this has still not been corrected: https://community.ccleaner.com/topic/61545-587-winsysini-windows-delivery-optimization-files/