Version Used: .NET 10 SDK

Steps to Reproduce:

1. IDirectory? relTo = relativeTo as IDirectory ?? relativeTo.Parent;
2. It will trigger IDE0048

Noticed this in dotnet/dotnet#1370, all the code patterns that use as and ?? now trigger IDE0048, even though this is not ambiguous and shouldn't need a parenthesis.

Likely caused by #79159

/cc @CyrusNajmabadi