Add extra check to detect if we are in jupyterlite

[hoxbro]

_JUPYTERLAB is no longer there when running jupyterlite, so found another way to detect it.

https://jupyter.org/try-jupyter/lab/

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (7a4fc21) 88.61% compared to head (bd8ea5a) 88.61%.

Files	Patch %	Lines
holoviews/pyodide.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6007   +/-   ##
=======================================
  Coverage   88.61%   88.61%           
=======================================
  Files         315      315           
  Lines       65593    65593           
=======================================
  Hits        58122    58122           
  Misses       7471     7471           

Flag	Coverage Δ
ui-tests	23.27% <0.00%> (ø)

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[philippjfr]

Also adding pyodide_http.patch_all() like what is done in Panel.

Doesn't that automatically get inherited from Panel?

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.