convertPathData with <def><radialGradient> with <path d="" transform=""> does not work

[JoKalliauer]

Processing (with defaultoption --enable=convertPathData)

$ svgo -i History_of_the_Universe-zh-hant.svg -o output.svg

for
https://commons.wikimedia.org/wiki/File:History_of_the_Universe-zh-hant.svg
does "remove" tree stars.

Because the file is quite big I tried a minimal working example:
min.svg.txt

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE svg PUBLIC '-//W3C//DTD SVG 1.1//EN' 'http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd'>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 165.85 959.11">
 <radialGradient id="a" cx="4965" cy="3101.6" r="7.99" gradientUnits="userSpaceOnUse">
  <stop offset="0" stop-opacity=".81"/>
  <stop offset="1" stop-opacity="0"/>
 </radialGradient>
 <g fill="url(#a)" transform="translate(-4957 -2166.6)">
  <path d="m4973 3101.6a7.99 7.99 0 1 1-15.98 0 7.99 7.99 0 1 1 15.98 0z" transform="matrix(2 0 0 2 -4957 -3093.6)"/>
  <path d="m4973 3101.6a7.99 7.99 0 1 1-15.98 0 7.99 7.99 0 1 1 15.98 0z" transform="matrix(2 0 0 2 -4823.1 -3661)"/>
  <path d="m4973 3101.6a7.99 7.99 0 1 1-15.98 0 7.99 7.99 0 1 1 15.98 0z" transform="matrix(2.75 0 0 2.75 -8660.7 -6340.7)"/>
 </g>
</svg>

then the output was:
output.svg.txt

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 165.85 959.11">
 <radialGradient id="a" cx="4965" cy="3101.6" r="7.99" gradientUnits="userSpaceOnUse">
  <stop offset="0" stop-opacity=".81"/>
  <stop offset="1" stop-opacity="0"/>
 </radialGradient>
 <g fill="url(#a)" transform="translate(-4957 -2166.6)">
  <path d="M4989 3109.6a15.98 15.98 0 1 1-31.96 0 15.98 15.98 0 1 1 31.96 0zM5122.9 2542.2a15.98 15.98 0 1 1-31.96 0 15.98 15.98 0 1 1 31.96 0zM5015.05 2188.7a21.973 21.973 0 1 1-43.945 0 21.973 21.973 0 1 1 43.945 0z"/>
 </g>
</svg>

It it quite simmilar as the solved RazrFalcon/svgcleaner#111

Copyright

License: CC-BY-SA 3.0

Author: Einweichen

source: https://commons.wikimedia.org/wiki/File:History_of_the_Universe-zh-hant.svg