fix: Allow dataset owners to explore their datasets (apache#20382)

* fix: Allow dataset owners to explore their datasets

* Re-order imports

* Give owners security manager permissions to their datasets

* Update test suite

* Add SqlaTable to is_owner types

* Add owners to datasource mock

* Fix VSCode import error

* Fix merge error

superset/views/utils.py

@@ -32,6 +32,7 @@
 import superset.models.core as models
 from superset import app, dataframe, db, result_set, viz
 from superset.common.db_query_status import QueryStatus
+from superset.connectors.sqla.models import SqlaTable
 from superset.datasource.dao import DatasourceDAO
 from superset.errors import ErrorLevel, SupersetError, SupersetErrorType
 from superset.exceptions import (