SvgLayers are stored with the wrong value format

We are getting percentages from the analysis, which is the correct format to use, but these are used and stored as pixel values for Skeletons:

https://gitlab.rlp.net/motionbank/applications/systems-frontend/-/blob/milestone-feature-data-views/src/mb-components/MbLayers/SvgLayers/Skeleton.vue#L135

Why are we not using percentages everywhere? Shouldn't SVG support percentage values, or is there a problem with that?