fix: clean file info cards for non-native video/media formats on tool page

Instead of showing a broken video player error for formats like AVI,
MKV, WMV that browsers can't play, show a clean file info card with
icon, filename, format, and size. Message says "Preview will be
available after processing" which is accurate -- the processed output
is typically in a browser-friendly format.

Also cleaned up the post-processing non-previewable card to match
the same visual style.

packages/shared/src/i18n/ar.ts

@@ -2453,6 +2453,7 @@ export const ar: TranslationKeys = {
     adjustSettings: "Adjust settings",
     startOver: "Start over with a new file",
     newFile: "New file",
+    previewUnavailable: "Preview will be available after processing",
     backToTools: "Back to Tools",
     original: "Original",
     processed: "Processed",