internal_activate_mode_default
Description:
public static bool internal_activate_mode_default (Pad pad, Object? parent, PadMode mode, bool active)
  
  Invoke the default activate mode function of a proxy pad that is owned by a ghost pad.
Parameters:
| pad | 
           the Pad to activate or deactivate.  | 
      
| parent | 
           the parent of   | 
      
| mode | 
           the requested activation mode  | 
      
| active | 
           whether the pad should be active or not.  | 
      
Returns:
| 
           true if the operation was successful.  |