**Description** After rolling back a patch, `package:shorebird_code_push`'s `checkForUpdate` method does not return the correct update status. **Steps To Reproduce** 1. Create and install a new patch 2. Roll back that patch in the console 3. Trigger a call to `checkForUpdate` 4. Note that the call reports `upToDate`, even though the current patch has been rolled back and a restart is required. **Expected Behavior** `checkForUpdate` reports `restartRequired` **Additional Info** After the rollback has been applied, both `currentPatch` and `nextPatch` report null, so that might be the real issue