Function parse_click_options 

pub fn parse_click_options<'js>(
    ctx: &Ctx<'js>,
    value: Opt<Value<'js>>,
) -> Result<Option<ClickOptions>>

Parse Playwright’s ClickOptions JS bag into the core struct. Accepts Opt<Value> so callers pass Opt(options) verbatim; None, undefined, or null → Ok(None). Unknown button / modifier strings raise a typed rquickjs::Error with the exact Playwright message so JS-side assertions see /Unknown (button|modifier)/ for drift detection.