Detect Pyodide to avoid get_asyncgen_hooks

[almarklein]

Ref pygfx/wgpu-py#795

[almarklein]

@Vipitis the hang makes a lot of sense! If sys.get_asyncgen_hooks() produces None, then the sleep call is simply ignored. This means that the scheduling breaks (it uses sleep), it simply stops rendering.

[almarklein]

@Vipitis do you need a release to be able to test this for Pyodide?

[Vipitis]

I can grab the wheel myself and test locally. plus the latest branch of the docs could technically serve a newer wheel...

will have time later today

[Vipitis]

I tested a wheel from main with a couple examples in wgpu and pygfx and seems to work now. (I didn't need anymore changes to _async.py from pygfx/wgpu-py#795 versus what is already in pygfx/wgpu-py#753)

[almarklein]

That's good to hear!