[BUG] cannot import name 'WebDriver' from 'bokeh.io.webdriver' in bokeh 3.3.3

[bjfar]

Software versions

Python version : 3.10.13 | packaged by conda-forge | (main, Dec 23 2023, 15:36:39) [GCC 12.3.0]
IPython version : (not installed)
Tornado version : 6.3.3
Bokeh version : 3.3.3
BokehJS static path : /home/benf/micromamba/envs/bokeh_test/lib/python3.10/site-packages/bokeh/server/static
node.js version : (not installed)
npm version : (not installed)
jupyter_bokeh version : (not installed)
Operating system : Linux-5.15.0-91-generic-x86_64-with-glibc2.31

Browser name and version

No response

Jupyter notebook / Jupyter Lab version

No response

Expected behavior

>>> import bokeh
>>> bokeh.__version__
'3.3.2'
>>> import bokeh.io.webdriver as wd
>>> wd.WebDriver
<class 'selenium.webdriver.remote.webdriver.WebDriver'>

Observed behavior

>>> import bokeh
>>> bokeh.__version__
'3.3.3'
>>> import bokeh.io.webdriver as wd
>>> wd.WebDriver
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'bokeh.io.webdriver' has no attribute 'WebDriver'

I cannot find anything in the changelog for 3.3.2 to 3.3.3 that indicates a deprecation related to this. Maybe I missed it though?

Example code

>>> import bokeh.io.webdriver as wd
>>> wd.WebDriver

### Stack traceback or browser console output

_No response_

### Screenshots

_No response_

[bryevdv]

@bjfar WebDriver is a Selenium API and was only coincidentally "available" as a transitive import. It was only imported at the top level for type checking purposes, and that import caused substantial increase in import times, so it was moved behind a type check guard, where it should have been to begin with:

if TYPE_CHECKING:
    from selenium.webdriver.remote.webdriver import WebDriver

In any case, it was never intended to be "Bokeh API", since it is actually a part of Selenium. If you actually need it directly, you should import it from Selenium yourself, or otherwise use actual Bokeh APIs to generate a webdriver.