Move localization to its own script block and load it first

        localizations[fn] = file.path

def localization_js(current_localization_name):

def localization_js(current_localization_name: str) -> str:

    fn = localizations.get(current_localization_name, None)

    data = {}

    if fn is not None:

            print(f"Error loading localization from {fn}:", file=sys.stderr)

            print(traceback.format_exc(), file=sys.stderr)

    return f"var localization = {json.dumps(data)}\n"

    return f"window.localization = {json.dumps(data)}"

def javascript_html():

    script_js = os.path.join(script_path, "script.js")

    head = f'<script type="text/javascript" src="{webpath(script_js)}"></script>\n'

    # Ensure localization is in `window` before scripts

    head = f'<script type="text/javascript">{localization.localization_js(shared.opts.localization)}</script>\n'

    inline = f"{localization.localization_js(shared.opts.localization)};"

    if cmd_opts.theme is not None:

        inline += f"set_theme('{cmd_opts.theme}');"

    script_js = os.path.join(script_path, "script.js")

    head += f'<script type="text/javascript" src="{webpath(script_js)}"></script>\n'

    for script in modules.scripts.list_scripts("javascript", ".js"):

        head += f'<script type="text/javascript" src="{webpath(script.path)}"></script>\n'

    for script in modules.scripts.list_scripts("javascript", ".mjs"):

        head += f'<script type="module" src="{webpath(script.path)}"></script>\n'

    head += f'<script type="text/javascript">{inline}</script>\n'

    if cmd_opts.theme:

        head += f'<script type="text/javascript">set_theme(\"{cmd_opts.theme}\");</script>\n'

    return head