No description or parameter on disabling the select all option on `st.multiselect`?

[MarcRvB-ProRail]

Link to doc page in question (if any):
https://docs.streamlit.io/develop/api-reference/widgets/st.multiselect

Name of the Streamlit feature whose docs need improvement:
st.multiselect

What you think the docs should say:
Currently there is no documentation (or even option?) on the docs website and Python docstring to turn off the 'select all' option on the st.multiselect widget.

For the docstring: I would like to see something like this:

select_all_opt: bool, default = True
    Option to add 'select all' as a valid option. If `True`, the user can easily select all given `options` at once. 

Meanwhile: If there are any workarounds to turn off this behavior, i would love to know how <3

Thanks for the great work you are all doing!

[sfc-gh-jrieke]

This is not possible right now, please file a feature request here: https://github.com/streamlit/streamlit/issues