refactor(chart.commands): separate commands into two different modules (#17509)

refactor: move imports under TYPE_CHECKING

superset/commands/utils.py

@@ -14,7 +14,9 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-from typing import List, Optional
+from __future__ import annotations
+
+from typing import List, Optional, TYPE_CHECKING
 
 from flask_appbuilder.security.sqla.models import Role, User
 
@@ -23,11 +25,13 @@ from superset.commands.exceptions import (
     OwnersNotFoundValidationError,
     RolesNotFoundValidationError,
 )
-from superset.connectors.base.models import BaseDatasource
 from superset.connectors.connector_registry import ConnectorRegistry
 from superset.datasets.commands.exceptions import DatasetNotFoundError
 from superset.extensions import db, security_manager
 
+if TYPE_CHECKING:
+    from superset.connectors.base.models import BaseDatasource
+
 
 def populate_owners(
     user: User, owner_ids: Optional[List[int]], default_to_user: bool,