AAX wrapper, audioProcessorParameterChanged never called

Hey, while giving a try to GenericAudioProcessorEditor for an AAX plug-in, I found that Pro Tools automations and the “Compare” functions were not replicating the actual parameter values to the plug-in’s UI.

I inspected with the debugger and I found that in the AAX case, AudioProcessorListener::audioProcessorParameterChanged() is never called, nor its implementation in juce_AAX_wrapper.cpp

Just so you know there is a bug there, I’ve no time just now to investigate a fix.