Fix backup not resuming after closed and reopen (#266)

* Fixed app not resuming backup after closing and reopening the app

* Fixed cosmetic effect of backup button doesn't change state right away after pressing start backup

* Fixed grammar

* Fixed deep copy problem that cause incorrect asset count when backing up

* Format code

mobile/lib/modules/backup/ui/backup_info_card.dart

@@ -4,7 +4,12 @@ class BackupInfoCard extends StatelessWidget {
   final String title;
   final String subtitle;
   final String info;
-  const BackupInfoCard({Key? key, required this.title, required this.subtitle, required this.info}) : super(key: key);
+  const BackupInfoCard(
+      {Key? key,
+      required this.title,
+      required this.subtitle,
+      required this.info})
+      : super(key: key);
 
   @override
   Widget build(BuildContext context) {