feat: auto sync table columns when change dataset (#15887)

* feat: auto sync dataset metadata when change dataset

* diablo sync button when edit mode

* handle undefine schema

* fix py UT

* fix FE UT

* improve test coverage

* fix UT

superset/security/manager.py

@@ -179,6 +179,7 @@ class SupersetSecurityManager(  # pylint: disable=too-many-public-methods
         "can_list",
         "can_get",
         "can_external_metadata",
+        "can_external_metadata_by_name",
         "can_read",
     }