Fix attributes inheritance

[Antti]

For some reason, if you just return render function (and not JS object as a component), attribute inheritance doesn't work.

Fix it by returning a normal Vue component with render function instead of a plain render function

Fixes https://github.com/jpkleemans/vite-svg-loader/issues/29

[jpkleemans]

Hi, that's really great! How did you come up with it? Thanks 👍

[Antti]

Thanks!

I was trying to fix this issue in different ways, and I noticed that it fixed itself once I returned a JS object with a render function instead of the render function itself.