🚸 (whatsapp) Avoid multiple replies to be sent concurently

Closes #972, closes #1453

packages/bot-engine/queries/getSession.ts

@@ -4,7 +4,7 @@ import { sessionStateSchema } from '@typebot.io/schemas'
 export const getSession = async (sessionId: string) => {
   const session = await prisma.chatSession.findUnique({
     where: { id: sessionId },
-    select: { id: true, state: true, updatedAt: true },
+    select: { id: true, state: true, updatedAt: true, isReplying: true },
   })
   if (!session) return null
   return { ...session, state: sessionStateSchema.parse(session.state) }