Debug: Why is CHROMEWEBDRIVER not defined in py37? Commit will be rev…

…erted.

It doesn't work for tox -e py37-check, but works for tox -e py312-check.

Will be reverted.

tox.ini

@@ -31,6 +31,7 @@ pass_env=
     CHROMEWEBDRIVER
 commands =
     python developer/pip_install_strictdoc_deps.py
+    bash -c 'echo "CHROMEWEBDRIVER = $CHROMEWEBDRIVER"'
     {posargs}
 
 [testenv:{py37,py38,py39,py310,py311,py312}-documentation]