Ensure metadata is not null before registering datasources for automatic hot reloading

packages/client/src/components/context/Provider.svelte

@@ -45,13 +45,14 @@
         // Register any "refresh datasource" actions with a singleton store
         // so we can easily refresh data at all levels for any datasource
         if (type === ActionTypes.RefreshDatasource) {
-          const { dataSource } = metadata || {}
+          if (metadata?.dataSource) {
             dataSourceStore.actions.registerDataSource(
-            dataSource,
+              metadata.dataSource,
               instanceId,
               callback
             )
           }
+        }
       })
     }
   }