fix: Fix 1703 Options selectize not working in modules

[elnelson575]

Fixes an issue as reported in #1703 where passing options into update_selectize() when server=True breaks the selectize menu (choices do not load, search/filtering does not occur).

Additional problems discovered while addressing this are documented here: #2052

[cpsievert]

Thanks! Looks good, please update the CHANGELOG and maybe worth a test?

[elnelson575]

We're moving this over here and adding a test for it.

Initial fix for overwriting:
move

if options is not None:
        cfg = tags.script(
            json.dumps(options),
            type="application/json",
            data_for=resolve_id(id),
            data_eval=json.dumps(extract_js_keys(options)),
        )
        session.send_input_message(id, {"config": cfg.get_html_string()})

to before

    if not server:
        return update_select(
            id, label=label, choices=choices, selected=selected, session=session
        )

in _input_update.py