Fix default value

frontend/src/metabase/databases/utils/schema.ts

@@ -25,7 +25,7 @@ export const getValidationSchema = (
     refingerprint: Yup.boolean().default(false),
     cache_ttl: Yup.number().nullable().default(null).positive(Errors.positive),
     is_sample: Yup.boolean().default(false),
-    is_full_sync: Yup.boolean().default(true),
+    is_full_sync: Yup.boolean().default(false),
     is_on_demand: Yup.boolean().default(false),
   });
 };