If you reinstall Transformer Lab, Plugins need to be reinstalled

[aliasaria]

The MLX plugin, for example, installs pip dependencies. If you delete the transformerlab conda environment, and then re-install, the MLX plugin will think it is installed but it won't be able to find it's depedencies.

Perhaps, upon reinstalling tranformerlab dependencies, we need to deactivate all plugins to reset their install state. Or we can loop through each one and reinstall it.