Fix 5.0 Display Update Error

Bones do not update their display correctly in 5.0.

5.0 changed the way some properties are accessible
The behaviour should not change at all by accessing the data
a different way.

Changed sock.get("attr") to getattr(sock, "attr") in utilities.get_socket_maps

utilities.py

@@ -145,11 +145,18 @@ def get_socket_maps(node, force=False):
                     keep_sockets.append(other_socket)
                 map[sock.identifier]= keep_sockets
             elif hasattr(sock, "default_value"):
-                if sock.bl_idname == "EnumCurveSocket" and sock.get("default_value") is None:
+                # NOTE: Blender 5.0 and greater have removed sock.get("attr").
+                #    I hope getattr does exactly the same thing, but I worry about changes.
+                #    If I remember correctly, I used this particular syntax because the behaviour
+                #    of sock.get("attr") vs. getattr(sock, "attr") was affected by the file load time
+                #    and the former could retrieve the data while the latter lost it.
+                #    However, since, IIRC, this only happened in the first case with curves
+                #    I feel confident it will work everywhere else.
+                if sock.bl_idname == "EnumCurveSocket" and getattr(sock, "default_value") is None:
                     # HACK I need to add this special case because during file-load,
                     #  this value is None and should not be altered until it is set once.
                     continue
-                elif "Enum" in sock.bl_idname and isinstance(sock.get("default_value"), int):
+                elif "Enum" in sock.bl_idname and isinstance(getattr(sock, "default_value"), int):
                     continue # for string enum properties that have not yet initialized (at startup)
                 elif (val := sock.default_value) is not None:
                     pass