beamertheme metropolis: Change Progressbar Line Width

Question

• I am using the very nice beamer theme metropolis, see https://ctan.org/pkg/beamertheme-metropolis or https://github.com/matze/mtheme.
• I like the progressbar option but it is too subtle for me.
• Question: How to increase the line width of the progress bar? Ideally, without modifying the style file.
• In the screenshot, the progress bar is orange and barely visible.

---

\documentclass{beamer}
% https://ctan.org/pkg/beamertheme-metropolis
\usetheme[
        sectionpage = progressbar,
        progressbar = frametitle,
        background = dark,
    ]{metropolis}
\title{Title}
\date{\today}
\begin{document}
\maketitle
\section{1. Section}
\begin{frame}{Frame Title 1}
\tableofcontents
\end{frame}
\section{2. Section}
\begin{frame}{Frame Title 2}
Hello, world!
\end{frame}
\section{3. Section}
\begin{frame}{Frame Title 3}
Hello, world!
\end{frame}
\end{document}

Update

My question is a duplicate of How to change width of progress bar in beamer metropolis theme?.

% https://tex.stackexchange.com/questions/577201
\makeatletter
\setlength{\metropolis@titleseparator@linewidth}{2pt}
\setlength{\metropolis@progressonsectionpage@linewidth}{2pt}
\setlength{\metropolis@progressinheadfoot@linewidth}{2pt}
\makeatother