image size mismatch with --mathsvg

[xworld21]

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Very related with #1841: dvisvgm and latexml guess different bounding boxes for mathimages.

\documentclass{amsart}
\begin{document}
  Horizontal spacing: see space between $\{x : x\text{ is an even integer}\}$ and the following text.
\end{document}

produces

Here the <img> tag has a @width attribute which is wider than the actual image obtained from dvisvgm. As soon as you delete @width, the spacing looks ok.

My suggestion would be to use, or emulate (not easy!), the preview package, and run dvisvgm with the option --bbox=preview.