Steps to replicate the issue (include links if applicable):

• Go to https://commons.wikimedia.org/wiki/File:MediaWiki-2020-icon-spinning.svg
• After "Original File" it should say "Animated SVG", but it only says "SVG"

What happens?:

• This file uses CSS animations, which are not detected by the SVGReader class and marked in the metadata record. This makes it impossible for MediaWiki to reflect that this is an animated file.

What should have happened instead?:
It should have stated "Animated SVG", as it does for other types of SVG animations like SMIL used by for instance https://commons.wikimedia.org/wiki/File:Animated_SVG_clock_grey.svg