make sure reply is available to read messages

and do not handle read messages for non private convo1

ts/components/conversation/message/message-content/MessageContextMenu.tsx

@@ -72,7 +72,7 @@ export const MessageContextMenu = (props: Props) => {
   const { messageId, contextMenuId } = props;
   const isOutgoing = direction === 'outgoing';
   const showRetry = status === 'error' && isOutgoing;
-  const isSent = status === 'sent';
+  const isSent = status === 'sent' || status === 'read'; // a read message should be replyable
   const multipleAttachments = attachments && attachments.length > 1;
 
   const onContextMenuShown = useCallback(() => {

ts/util/readReceipts.ts

@@ -27,6 +27,20 @@ async function onReadReceipt(receipt: { source: string; timestamp: number; readA
       window.log.info('No message for read receipt', receipt.source, receipt.timestamp);
       return;
     }
+    const convoId = message.get('conversationId'); // this might be a group and we don't want to handle them
+    if (
+      !convoId ||
+      !getConversationController().get(convoId) ||
+      !getConversationController()
+        .get(convoId)
+        .isPrivate()
+    ) {
+      window.log.info(
+        'Convo is undefined or not a private chat for read receipt in convo',
+        convoId
+      );
+      return;
+    }
 
     const readBy = message.get('read_by') || [];
     const expirationStartTimestamp = message.get('expirationStartTimestamp');