Change MFM image's backgroundSize from cover to contain

Author: git-babel

src/ui/ImageRenderer/index.tsx

@@ -100,7 +100,7 @@ const ImageRenderer = ({
     const backgroundStyle = internalUrl ? {
       backgroundRepeat: 'no-repeat',
       backgroundPosition: 'center',
-      backgroundSize: 'cover',
+      backgroundSize: 'contain',
       backgroundImage: `url(${internalUrl})`,
     } : {};