add: suggested comment

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: Anshumancanrock

src/handlers/event-message-handler.ts

@@ -247,6 +247,7 @@ export class EventMessageHandler implements IMessageHandler {
           return 'blocked: reposts must not embed protected events'
         }
       } catch (_e) {
+        // Ignore invalid JSON: repost content is not a valid embedded event
       }
     }
   }