AMS class' \@starttoc incompatible

[mbertucci47]

The AMS classes overwrite the \@starttoc command, making \tableofcontents, \listoffigures, etc., incompatible with tagging.

\DocumentMetadata
  {
    lang=en-US,
    pdfversion=2.0,
    pdfstandard=ua-2,
    testphase={phase-III,math,table,title,firstaid}
  }
\documentclass{amsart}

\title{amsart tagging test}

\begin{document}

\tableofcontents
\listoffigures

\section{First section}
\subsection{First subsection}
\begin{figure}
Some figure
\caption{A figure caption}
\end{figure}
\end{document}

warns

Package tagpdf Warning: Parent-Child 'TOCI/pdf' --> 'text-unit/latex'.
(tagpdf)                Relation is not allowed (struct 8, /TOCI --> struct 9)
(tagpdf)                on line 1

and so on.