game_list_worker: Use QString's formatting instead of fmt in FormatPatchNameVersions()

Using fmt here requires unnecessary string conversions back into
QString. Instead, we can just use QString's formatting and get the end
result of the formatting operation in the proper type.

src/yuzu/game_list_worker.cpp

@@ -62,19 +62,24 @@ QString FormatPatchNameVersions(const FileSys::PatchManager& patch_manager,
     FileSys::VirtualFile update_raw;
     loader.ReadUpdateRaw(update_raw);
     for (const auto& kv : patch_manager.GetPatchVersionNames(update_raw)) {
-        if (!updatable && kv.first == "Update")
+        const bool is_update = kv.first == "Update";
+        if (!updatable && is_update) {
             continue;
+        }
+
+        const QString type = QString::fromStdString(kv.first);
 
         if (kv.second.empty()) {
-            out.append(fmt::format("{}\n", kv.first).c_str());
+            out.append(QStringLiteral("%1\n").arg(type));
         } else {
             auto ver = kv.second;
 
             // Display container name for packed updates
-            if (ver == "PACKED" && kv.first == "Update")
+            if (is_update && ver == "PACKED") {
                 ver = Loader::GetFileTypeString(loader.GetFileType());
+            }
 
-            out.append(fmt::format("{} ({})\n", kv.first, ver).c_str());
+            out.append(QStringLiteral("%1 (%2)\n").arg(type, QString::fromStdString(ver)));
         }
     }