fix: Allow dataset owners to explore their datasets (#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

tests/integration_tests/base_tests.py

@@ -21,7 +21,7 @@ import imp
 import json
 from contextlib import contextmanager
 from typing import Any, Dict, Union, List, Optional
-from unittest.mock import Mock, patch
+from unittest.mock import Mock, patch, MagicMock
 
 import pandas as pd
 import pytest
@@ -252,7 +252,7 @@ class SupersetTestCase(TestCase):
 
     @staticmethod
     def get_datasource_mock() -> BaseDatasource:
-        datasource = Mock()
+        datasource = MagicMock()
         results = Mock()
         results.query = Mock()
         results.status = Mock()
@@ -266,6 +266,7 @@ class SupersetTestCase(TestCase):
         datasource.database = Mock()
         datasource.database.db_engine_spec = Mock()
         datasource.database.db_engine_spec.mutate_expression_label = lambda x: x
+        datasource.owners = MagicMock()
         return datasource
 
     def get_resp(