text: Title: AttributeError: module 'google.colab.output' has no attribute 'serve_kernel_port_as_iframe' in latest version
  Body: I experienced the following issue described here: https://stackoverflow.com/questions/68729989/jupyterdash-in-jupyterlabs-fails-after-using-plotly-express-in-a-prior-cell/68737108#68737108
  
  I was only able to solve my issue by downgrading to version 0.2.1.
  
  Maybe there can be a way for users to turn off the connectivity to Google Colab when it causes problems?