fix: Columns not passing properly from SQL Lab to Explore (#20975)

* debugging columns

* Clean up code

* Fix test

superset-frontend/src/utils/datasourceUtils.js

@@ -19,7 +19,7 @@
 export const getDatasourceAsSaveableDataset = source => ({
   columns: source.columns,
   name: source?.datasource_name || source?.name || 'Untitled',
-  dbId: source.database.id,
+  dbId: source?.database?.id || source?.dbId,
   sql: source?.sql || '',
   schema: source?.schema,
 });