feat: improve translation coverage (#1427)

Improves translation coverage across the app.

packages/ui/primitives/lazy-pdf-viewer.tsx

@@ -2,6 +2,7 @@
 
 import dynamic from 'next/dynamic';
 
+import { Trans } from '@lingui/macro';
 import { Loader } from 'lucide-react';
 
 export const LazyPDFViewer = dynamic(async () => import('./pdf-viewer'), {
@@ -10,7 +11,9 @@ export const LazyPDFViewer = dynamic(async () => import('./pdf-viewer'), {
     <div className="dark:bg-background flex h-[80vh] max-h-[60rem] flex-col items-center justify-center bg-white/50">
       <Loader className="text-documenso h-12 w-12 animate-spin" />
 
-      <p className="text-muted-foreground mt-4">Loading document...</p>
+      <p className="text-muted-foreground mt-4">
+        <Trans>Loading document...</Trans>
+      </p>
     </div>
   ),
 });