Fatal crash in API 35 from FileNotFoundException on init call

Hi there,

DBFlow Version: 4.2.4

Bug or Feature Request: Bug for sure

Description: When pushing to API 33 on a fresh install, I get an exception on `FlowManager.init()` but the new DB is successfully initialized. When pushing to a VM with API 35, there is a fatal crash with an identical stacktrace.

```
20:01:49.166 5280-5280 FlowLog com.example.myapp E java.io.FileNotFoundException: MyDbFile.db
at android.content.res.AssetManager.nativeOpenAsset(Native Method)
at android.content.res.AssetManager.open(AssetManager.java:904)
at android.content.res.AssetManager.open(AssetManager.java:881)
at com.raizlabs.android.dbflow.structure.database.DatabaseHelperDelegate.restoreDatabase(DatabaseHelperDelegate.java:261)
at com.raizlabs.android.dbflow.structure.database.DatabaseHelperDelegate.performRestoreFromBackup(DatabaseHelperDelegate.java:53)
at com.simplebutneeded.android.commons.database.SQLCipherOpenHelper.performRestoreFromBackup(SQLCipherOpenHelper.java:73)
at com.raizlabs.android.dbflow.config.DatabaseDefinition.getHelper(DatabaseDefinition.java:250)
at com.raizlabs.android.dbflow.config.DatabaseDefinition.getWritableDatabase(DatabaseDefinition.java:257)
at com.raizlabs.android.dbflow.config.FlowManager.init(FlowManager.java:324)
at com.example.myapp.database.MyDatabaseInitializer.initializeDatabase(MyDatabaseInitializer.java:68)
```