Extra toast for Message Receiver errors

ts/util/handleRetry.ts

@@ -29,6 +29,7 @@ import type { ConversationModel } from '../models/conversations';
 import type {
   DecryptionErrorEvent,
   DecryptionErrorEventData,
+  InvalidPlaintextEvent,
   RetryRequestEvent,
   RetryRequestEventData,
 } from '../textsecure/messageReceiverEvents';
@@ -205,6 +206,23 @@ function maybeShowDecryptionToast(
   });
 }
 
+export function onInvalidPlaintextMessage({
+  data,
+}: InvalidPlaintextEvent): void {
+  const { senderUuid, senderDevice, timestamp } = data;
+  const logId = `${senderUuid}.${senderDevice} ${timestamp}`;
+
+  log.info(`onInvalidPlaintextMessage/${logId}: Starting...`);
+
+  const conversation = window.ConversationController.getOrCreate(
+    senderUuid,
+    'private'
+  );
+
+  const name = conversation.getTitle();
+  maybeShowDecryptionToast(logId, name, senderDevice);
+}
+
 export async function onDecryptionError(
   event: DecryptionErrorEvent
 ): Promise<void> {