Fix Select to render native <select> by default (#91)

[oegedijk]

Fixes #91. +8 lines, one file.

Select currently always wraps <uk-select>. That means id/name land on the wrapper, not a form control, so native form submission and HTMX (hx_trigger="change", hx_include="#my_select") don't work.

Fix: when searchable/insertable aren't requested, just return fh.Select(..., cls='uk-select', id=id, name=name, **kwargs) and skip the web component.

if not (searchable or insertable):
    if id and not name: name = id
    return fh.Select(*option, cls=('uk-select', inp_cls), id=id, name=name, **kwargs)

The searchable/insertable path is untouched.

Tradeoff

The closed/styled appearance is the same — .uk-select CSS styles native <select> too (border, padding, chevron, focus). The difference shows up when you open the dropdown: native uses the OS picker instead of the FrankenUI-themed panel. If a user wants the themed panel they opt in with searchable=True.

Rich HTML inside <option> (e.g. Option(A(...))) won't render links in native — browsers only render text inside options. Nothing in the repo relies on this except the dashboard example where the A tags were cosmetic; the options still display fine.