Version v2.3 introduced a bug in `floatrow` (`\caption@setposition{a}` involved)

Version v2.3 (2022/01/07) of caption3 has introduced a bug in floatrow. Indeed, the following MCE (which involves caption3 only indirectly):

\documentclass{article}
\usepackage{floatrow}
\floatsetup{capposition=beside}
\begin{document}
\begin{figure}
  \centering
  Foo
  \caption{Bar}
\end{figure}
\end{document}

fails to compile with the error:

! Package caption Error: Undefined position `a'.

And, indeed:

• line 1030 of floatrow contains \caption@ifinlist{#1}{beside,side}{\caption@setposition{a}\capbeside,
• line 929 of caption3_2020-07-29.sty which contains \caption@ifinlist{#1}{a,auto} has been dropped in caption3.sty.

Could advise a replacement of \caption@setposition{a} in floatrow.sty?

If you see other adjustments needed in floatrow, please advise as well 😄 (though I'm not sure its author, Olga Lapko, is still active).

Here is my File List

 article.cls    2021/10/04 v1.4n Standard LaTeX document class
  size10.clo    2021/10/04 v1.4n Standard LaTeX file (size option)
floatrow.sty    2008/08/02 v0.3b floatrow: float package extension
  keyval.sty    2014/10/28 v1.15 key=value parser (DPC)
caption3.sty    2022/01/07 v2.3 caption3 kernel (AR)
l3backend-luatex.def    2022-02-07 L3 backend support: PDF output (LuaTeX)
  ts1cmr.fd    2019/12/16 v2.5j Standard LaTeX font definitions
   color.sty    2021/12/07 v1.3c Standard LaTeX Color (DPC)
   color.cfg    2016/01/02 v1.6 sample color configuration
  luatex.def    2021/06/01 v1.2c Graphics/color driver for luatex
supp-pdf.mkii