cppTango 9.3.0 : Crash of C++ client when trying to subscribe to a Tango 7 device

We experienced a crash of one of our HDB++ Event Subscriber when it was trying to subscribe to archive events on an attribute from a Tango 7 device (which is still using notifd). The crash was due to one of the assert calls which are at the end of Tango::EventConsumer::initialize_received_from_admin() method. We could discuss whether we still want to support the compatibility with notifd events but I think attempting to subscribe to some events on Tango 7 device attributes should in any case not stop the clients. If we decide to stop the support for these old devices (to be discussed), we should at least throw an exception notifying that this is no longer supported without crashing the client.