fix: preserve upload progress across page navigation

frontend/src/App.tsx

@@ -14,6 +14,7 @@ import { useTheme } from "./theme";
 import { Icon } from "./ui/Icon";
 import { useSpatialNav } from "./ui/nav";
 import { THEME_ICON, THEME_LABEL } from "./ui/ThemeButton";
+import { UploadProvider } from "./uploads";
 
 function RequirePerm({ perm, children }: { perm: string; children: JSX.Element }) {
   const { can } = useAuth();
@@ -86,6 +87,7 @@ export function App() {
   if (me.must_change_password || me.must_change_username) return <ChangeCredentials forced />;
 
   return (
+    <UploadProvider key={me.id}>
     <Routes>
       <Route path="/play/:versionId" element={<RequirePerm perm="games.play"><Play /></RequirePerm>} />
       <Route
@@ -127,5 +129,6 @@ export function App() {
         }
       />
     </Routes>
+    </UploadProvider>
   );
 }