core: fix v5.8 backups not restoring due to changed item ids (#1303)

* core: back restore repaired due to version change
Signed-off-by: Muhammad Ali <alihamuh@gmail.com>

packages/core/database/backup.js

@@ -200,7 +200,7 @@ export default class Backup {
       await this._migrator.migrate(
         this._db,
         collections,
-        (id) => data[id],
+        (id, type) => (version < 5.8 ? data[id] : data[`${id}_${type}`]),
         version,
         true
       );