fix: restore compact favicon source usage

frontend/public/sw.js

@@ -10,6 +10,7 @@ const SW_VERSION = '2.0.0';
 const STATIC_CACHE = `eusrr-static-${SW_VERSION}`;
 const PRECACHE_URLS = [
     '/manifest.webmanifest',
+    '/favicon-source.svg',
     '/logo.png',
     '/logo.webp',
     '/icon-192.png',

frontend/src/app/layout.tsx

@@ -27,9 +27,11 @@ export const metadata: Metadata = {
   },
   icons: {
     icon: [
+      { url: "/favicon-source.svg", type: "image/svg+xml", sizes: "any" },
       { url: "/icon-192.png", sizes: "192x192", type: "image/png" },
       { url: "/icon-512.png", sizes: "512x512", type: "image/png" },
     ],
+    shortcut: [{ url: "/favicon-source.svg", type: "image/svg+xml" }],
     apple: [{ url: "/apple-touch-icon.png", sizes: "180x180", type: "image/png" }],
   },
 };