fix: add optional chaining on msg for templateMessage field

Matches the null-safety style of the surrounding fields in
getTypeMessage() — msg could theoretically be undefined/null.

Addresses sourcery-ai review comment on #2666.

Author: pbarbagli

src/api/integrations/chatbot/chatwoot/services/chatwoot.service.ts

@@ -1778,7 +1778,7 @@ export class ChatwootService {
         msg?.message?.viewOnceMessageV2?.message?.imageMessage?.url ||
         msg?.message?.viewOnceMessageV2?.message?.videoMessage?.url ||
         msg?.message?.viewOnceMessageV2?.message?.audioMessage?.url,
-      templateMessage: msg.templateMessage?.hydratedTemplate?.hydratedContentText,
+      templateMessage: msg?.templateMessage?.hydratedTemplate?.hydratedContentText,
     };
 
     return types;