Add workaround for Signal bug

SignalServiceKit/src/Loki/Extensions/TSOutgoingMessage.swift

@@ -3,6 +3,7 @@
     
     /// Loki: This is a message used to establish sessions
     @objc public static func createEmptyOutgoingMessage(inThread thread: TSThread) -> EphemeralMessage {
-        return EphemeralMessage(in: thread, messageBody: "", attachmentId: nil)
+        return EphemeralMessage(outgoingMessageWithTimestamp: NSDate.ows_millisecondTimeStamp(), in: thread, messageBody: "", attachmentIds: [], expiresInSeconds: 0,
+            expireStartedAt: 0, isVoiceMessage: false, groupMetaMessage: .unspecified, quotedMessage: nil, contactShare: nil, linkPreview: nil)
     }
 }