Fix: Add MLX node in dora node-hub #882

[Sumitb09]

No description provided.

[Hennzau]

In my understanding, mlx is only available on macos, so you need to tell the CI to only run the test on macos. But to be honest I don't know how the node-hub CI works, we have to ask @haixuanTao for that

[phil-opp]

There seems to be another PR that implements the same thing at #985 ? Should this be closed in favor of #985?

cc @Clement795