Selfhosted: Uploading branding images during setup doesn't actually upload the asset

(#628) Bug Fixed self-hosting

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Comment by @InsertDisc
RexSystem 1 vote originally by @InsertDisc on GitHub OP
> Were you able to get the favicon working as well? yes, all of my branding assets work after putting .png at the end of the URL
Maybe I'm misunderstanding. Adding PNG did make the icons appear, except the favicon. That should be the one in the browser tabs and next to the url instead of the default blue and white image? Yes? It doesn't seem to change for me. Slightly off scope of the original post though.