fix(frontend): unbreak round video ring and playback in firefox

frontend/src/lib/components/MediaViewer.svelte

@@ -155,7 +155,7 @@
             src={result.url}
             controls
             playsinline
-            preload="metadata"
+            preload="auto"
             use:poster
           ></video>
         {:else if result?.state === "ready" && isAudio}