problem with `imgui.ArrowButton()` Python wrapper (regression ?)

[BrunoLevy]

Hello,
I'm using arrow buttons as follows:

import polyscope as ps 
....
if ps.imgui.ArrowButton(my_button_string_id,ps.imgui.ImGuiDir_Up):
   do something

It used to work with a previous version, but now it complains with the following message:

TypeError: ArrowButton(): incompatible function arguments. The following argument types are supported:
    1. (str_id: str, dir: ImGuiDir) -> bool
Invoked with: 'arrowup', 2

ps.version('Polyscope') says '2.5.0'

Side notes:

• I have seen there is much activity in this project on the binding generator for Dear ImGui. I guess that the Dear ImGui binding of the new version expects a stricter typing, with a Python type for each enum, but I did not find this ImGuiDir type in ps.imgui
• All the rest of Dear Imgui seems to be functioning in pyGraphite (a special version of my Graphite software in Polyscope/Python), that makes a quite extensive use of Dear ImGui.