Doesn't call `canInitWithRequest` on `NSURLProtocol`

[mapierce]

Running PINRemoteImage version 3.0.3 on Xcode 15 and I noticed when I was attempting to stub image loading for tests that the function + (BOOL)canInitWithRequest:(NSURLRequest *)request; in the NSURLProtocol is not called.

This function is hit when running PINRemoteImage on Xcode 14, and is critical for us in testing and stubbing image loading with PINRemoteImage. Does anyone have any insight as to why this is the case and how to rectify it?