perform_select_option does not persist selection on single <select> elements

[barankutluay]

Bug: perform_select_option loses selection on single <select>

Package: Botasaurus Driver
File: botasaurus_driver/core/element.py

perform_select_option() sets option.selected = true on <option> but does not update the parent <select>'s value, causing selections on single <select> elements to be lost when focus changes. Multi-select <select multiple> is unaffected.

Proposed fix:

def perform_select_option(self):
        """
        Marks an <option> as selected and properly updates the parent <select> element
        to persist the selection.
    
        Fixes a bug where single <select> elements lose their selected option
        when focus moves to another input. Multi-select <select multiple> behavior
        remains intact.
    
        Usage: call this method on an Option element returned by select queries.
        """

        if self.node_name == "OPTION":
            self.apply(
                """
                (o) => {
                    const select = o.parentElement;
                    if (select && select.multiple) {
                        o.selected = true;
                    } else {
                        select.value = o.value;
                    }
                    select.dispatchEvent(new Event('input', { bubbles: true }));
                    select.dispatchEvent(new Event('change', { bubbles: true }));
                }
                """
            )