fix(fle): remove extra non-ascii bytes from fle.Notification.config string
fix(fle): remove extra non-ascii bytes from fle.Notification.config string

these bytes were unexpectedly prepended to config string
 - int32 Notification.CURRENTVERSION
 - int32 configData.length

fengshao0907/zktraffic,bonifaido/zktraffic,twitter/zktraffic,rgs1/zktraffic