Loading shiny fails when installed normally

When shiny is installed normally (not pip install -e), loading it causes an error.

To install it:

pip3 uninstall shiny
make install

After installing it, loading results in an error:

>>> import shiny
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/homebrew/lib/python3.9/site-packages/shiny-0.0.0.9001-py3.9.egg/shiny/__init__.py", line 9, in <module>
    from . import ui
  File "/opt/homebrew/lib/python3.9/site-packages/shiny-0.0.0.9001-py3.9.egg/shiny/ui/__init__.py", line 7, in <module>
    from ._bootstrap import *
  File "/opt/homebrew/lib/python3.9/site-packages/shiny-0.0.0.9001-py3.9.egg/shiny/ui/_bootstrap.py", line 40, in <module>
    from ._page import get_window_title
  File "/opt/homebrew/lib/python3.9/site-packages/shiny-0.0.0.9001-py3.9.egg/shiny/ui/_page.py", line 29, in <module>
    from ._navs import navs_bar
  File "/opt/homebrew/lib/python3.9/site-packages/shiny-0.0.0.9001-py3.9.egg/shiny/ui/_navs.py", line 529, in <module>
    def navs_hidden(
  File "/opt/homebrew/lib/python3.9/site-packages/shiny-0.0.0.9001-py3.9.egg/shiny/_docstring.py", line 15, in _
    raise ValueError(f"No example for {fn_name}")
ValueError: No example for navs_hidden

Reproduce the failure with make install, then import shiny. Start with shiny/_docstring.py and the navs_hidden definition in shiny/ui/_navs.py, as shown in the traceback. Done means a normally installed package imports without raising the missing-example ValueError.