Fix #2553 : Right click documentation is now only available for Blender 3.3+

Also fix an error in the console when right clicking a button

src/blenderbim/blenderbim/bim/__init__.py

@@ -159,7 +159,8 @@ def register():
     bpy.types.Camera.BIMMeshProperties = bpy.props.PointerProperty(type=prop.BIMMeshProperties)
     bpy.types.PointLight.BIMMeshProperties = bpy.props.PointerProperty(type=prop.BIMMeshProperties)
     bpy.types.SCENE_PT_unit.append(ui.ifc_units)
-    bpy.types.UI_MT_button_context_menu.append(ui.draw_custom_context_menu)
+    if hasattr(bpy.types, "UI_MT_button_context_menu"):
+        bpy.types.UI_MT_button_context_menu.append(ui.draw_custom_context_menu)
 
     for mod in modules.values():
         mod.register()

src/blenderbim/blenderbim/bim/ui.py

@@ -386,6 +386,12 @@ class BIM_PT_misc_object(Panel):
 
 def draw_custom_context_menu(self, context):
     # https://blender.stackexchange.com/a/275555/86891
+    if (
+        not hasattr(context, "button_pointer")
+        or not hasattr(context, "button_prop")
+        or not hasattr(context.button_prop, "identifier")
+    ):
+        return
     prop = context.button_pointer
     prop_name = context.button_prop.identifier
     prop_value = getattr(prop, prop_name, None)