Change base 64 encoded GIFs to SVGs

Created by: tom-sherman

Fixes #23185 (closed)

For reference, an example of the decoded SVG is as follows:

<svg width="1" height="1" xmlns="http://www.w3.org/2000/svg"><path fill="#00dc83" d="M0 0h1v1H0z"/></svg>

Minified using SVGOMG: https://github.com/jakearchibald/svgomg