Revert "rm unused syncState"
Revert "rm unused syncState"

This reverts commit 1c602989913601628a511069b9babb215f080416.

wonderpush/wonderpush-ios-sdk,wonderpush/wonderpush-ios-sdk,wonderpush/wonderpush-ios-sdk,wonderpush/wonderpush-ios-sdk,wonderpush/wonderpush-ios-sdk