[native] fix creating new device list in reorderAndSignDeviceList

Summary:
Fix for [ENG-10102](https://linear.app/comm/issue/ENG-10102/non-primary-device-create-invalid-device-list-update-when-migrating).

Depends on D14216

Test Plan: Tested that when running device list o non-primary new device list is properly created

Reviewers: bartek, tomek

Reviewed By: bartek, tomek

Subscribers: ashoat

Differential Revision: https://phab.comm.dev/D14217

native/backup/use-migration-to-new-flow.js

@@ -43,7 +43,10 @@ async function reorderAndSignDeviceList(
   const newDevices =
     thisDeviceIndex === 0
       ? currentDevices
-      : [thisDeviceID, ...currentDevices.splice(thisDeviceIndex, 1)];
+      : [
+          thisDeviceID,
+          ...currentDevices.filter(deviceID => deviceID !== thisDeviceID),
+        ];
 
   const rawList = composeRawDeviceList(newDevices);
   const signedList = await signDeviceListUpdate(rawList);