How can I try recent translation?

[mactkg]

I'm interested in translating arduino-ide , but it seems almost completed Japanese translation.
I want to contribute to this project by using arduino-ide with a recent translation file to feedback problems and polish translating quality.

Both nightly Arduino IDE 2.0 and Arduino IDE 2.0.0-rc3 didn't contain translation.
How can I try a recent translation on IDE?

[mactkg]

I found a forum, so I'll move this topic there.

moved: https://forum.arduino.cc/t/how-can-i-try-recent-transration/949634?u=mactkg