Upload the right display name to open group from the slave device

Signal/src/Loki/View Controllers/JoinPublicChatVC.swift

@@ -133,7 +133,8 @@ final class JoinPublicChatVC : BaseVC, UIPageViewControllerDataSource, UIPageVie
         isJoining = true
         let channelID: UInt64 = 1
         let urlAsString = url.absoluteString
-        let displayName = OWSProfileManager.shared().localProfileName()
+        let userHexEncodedPublicKey = UserDefaults.standard[.masterHexEncodedPublicKey] ?? getUserHexEncodedPublicKey()
+        let displayName = OWSProfileManager.shared().profileNameForRecipient(withID: userHexEncodedPublicKey)
         let profilePictureURL = OWSProfileManager.shared().profilePictureURL()
         let profileKey = OWSProfileManager.shared().localProfileKey().keyData
         LokiPublicChatManager.shared.addChat(server: urlAsString, channel: channelID)

SignalServiceKit/src/Loki/API/Open Groups/LokiPublicChatAPI.swift

@@ -19,7 +19,8 @@ public final class LokiPublicChatAPI : LokiDotNetAPI {
 
     // MARK: Convenience
     private static var userDisplayName: String {
-        return SSKEnvironment.shared.contactsManager.displayName(forPhoneIdentifier: getUserHexEncodedPublicKey()) ?? "Anonymous"
+        let userHexEncodedPublicKey = UserDefaults.standard[.masterHexEncodedPublicKey] ?? getUserHexEncodedPublicKey()
+        return SSKEnvironment.shared.profileManager.profileNameForRecipient(withID: userHexEncodedPublicKey) ?? "Anonymous"
     }
     
     // MARK: Database