Add toast on user unmute in voice chats

Telegram/Telegram-iOS/en.lproj/Localizable.strings

@@ -6255,6 +6255,7 @@ Sorry for the inconvenience.";
 
 "VoiceChat.YouCanNowSpeak" = "You can now speak";
 "VoiceChat.YouCanNowSpeakIn" = "You can now speak in **%@**";
+"VoiceChat.UserCanNowSpeak" = "**%@** can now speak";
 
 "VoiceChat.MutedByAdmin" = "Muted by Admin";
 "VoiceChat.MutedByAdminHelp" = "Tap if you want to speak";

submodules/TelegramCallsUI/Sources/VoiceChatController.swift

@@ -1219,6 +1219,8 @@ public final class VoiceChatController: ViewController {
                                         
                                         let _ = strongSelf.call.updateMuteState(peerId: peer.id, isMuted: false)
                                         f(.default)
+                                        
+                                        strongSelf.presentUndoOverlay(content: .voiceChatCanSpeak(text: presentationData.strings.VoiceChat_UserCanNowSpeak(entry.peer.displayTitle(strings: strongSelf.presentationData.strings, displayOrder: strongSelf.presentationData.nameDisplayOrder)).0), action: { _ in return true })
                                     })))
                                 } else {
                                     items.append(.action(ContextMenuActionItem(text: strongSelf.presentationData.strings.VoiceChat_MutePeer, icon: { theme in