[IMPROVE] Improve unreads and unreadsFrom response, prevent it to be equal null (#12563)
[IMPROVE] Improve unreads and unreadsFrom response, prevent it to be equal null (#12563)

* Improve unreads and unreadsFrom response, prevent it to be equal null

* Add timestamp or last seen  in groups.counter

Co-Authored-By: MarcosSpessatto <bafa97d0baee1a18f269cfe70c0532b0fb220b4a@ulbra.inf.br>

pkgodara/Rocket.Chat,4thParty/Rocket.Chat,4thParty/Rocket.Chat,Sing-Li/Rocket.Chat,subesokun/Rocket.Chat,inoio/Rocket.Chat,pkgodara/Rocket.Chat,subesokun/Rocket.Chat,inoio/Rocket.Chat,VoiSmart/Rocket.Chat,subesokun/Rocket.Chat,pkgodara/Rocket.Chat,Sing-Li/Rocket.Chat,4thParty/Rocket.Chat,VoiSmart/Rocket.Chat,inoio/Rocket.Chat,4thParty/Rocket.Chat,Sing-Li/Rocket.Chat,Sing-Li/Rocket.Chat,subesokun/Rocket.Chat,VoiSmart/Rocket.Chat,pkgodara/Rocket.Chat