feat(webhook): add support for server_name field in WebhookEventInfo

app/modules/plex/__init__.py

@@ -64,7 +64,10 @@ class PlexModule(_ModuleBase, _MediaServerBase[Plex]):
             server: Plex = self.get_instance(source)
             if not server:
                 return None
-            return server.get_webhook_message(form)
+            result = server.get_webhook_message(form)
+            if result:
+                result.server_name = source
+            return result
 
         for server in self.get_instances().values():
             if server: