[I18N] Update all pt-BR strings for the notifications screen

[rafaelks]

@RocketChat/ios

[codecov]

Codecov Report

Merging #2103 into develop will increase coverage by 0.05%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #2103      +/-   ##
===========================================
+ Coverage    35.42%   35.47%   +0.05%     
===========================================
  Files          382      382              
  Lines        17916    17916              
===========================================
+ Hits          6346     6355       +9     
+ Misses       11570    11561       -9

Impacted Files	Coverage Δ
...et.Chat/Managers/Socket/Response/SocketError.swift	93.33% <0%> (-6.67%)	⬇️
...ket.Chat/Controllers/Chat/ChatViewController.swift	30.62% <0%> (-0.11%)	⬇️
...lers/Notification/NotificationViewController.swift	52.22% <0%> (ø)	⬆️
...Chat/Managers/Socket/Response/SocketHandlers.swift	63.63% <0%> (ø)	⬆️
...Managers/Model/AuthManager/AuthManagerSocket.swift	27.56% <0%> (ø)	⬆️
...ubscriptionsList/SubscriptionsViewController.swift	39.23% <0%> (+0.27%)	⬆️
Rocket.Chat/API/APIRequest.swift	97.29% <0%> (+2.7%)	⬆️
Rocket.Chat/Managers/PushManager.swift	62.29% <0%> (+4.91%)	⬆️
...Chat/Models/Subscription/SubscriptionQueries.swift	100% <0%> (+25%)	⬆️

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