fix: correct a missing exception from the previous commit

cubicweb_api/predicates.py

+from cubicweb import AuthenticationError
 from pyramid.config import Configurator
 
@@ -1,6 +2,6 @@
 from pyramid.config import Configurator
 
-from cubicweb_api import ApiAuthenticationError
+from cubicweb_api import ApiException
 
 
 class AnonymousOrConnectedUserPredicate:
@@ -19,7 +20,7 @@
             is not None
         ):
             return True
-        raise ApiAuthenticationError
+        raise ApiException(AuthenticationError())
 
 
 def includeme(config: Configurator):