feat: hack db connection modal ctabtns (#20017)

* add flow for dbconnmodal to datasetmodal

* fix bug

* second part

* fix dataset to sql lab

* fix lint

* more lint

* add key value

* fix type

* add new styling

* remove undefined from types

superset-frontend/src/components/TableSelector/index.tsx

@@ -81,7 +81,7 @@ const TableLabel = styled.span`
 
 interface TableSelectorProps {
   clearable?: boolean;
-  database?: DatabaseObject;
+  database?: DatabaseObject | null;
   emptyState?: ReactNode;
   formMode?: boolean;
   getDbList?: (arg0: any) => {};
@@ -166,12 +166,11 @@ const TableSelector: FunctionComponent<TableSelectorProps> = ({
   onTableSelectChange,
 }) => {
   const [currentDatabase, setCurrentDatabase] = useState<
-    DatabaseObject | undefined
+    DatabaseObject | null | undefined
   >(database);
   const [currentSchema, setCurrentSchema] = useState<string | undefined>(
     schema,
   );
-
   const [tableOptions, setTableOptions] = useState<TableOption[]>([]);
   const [tableSelectValue, setTableSelectValue] = useState<
     SelectValue | undefined
@@ -190,6 +189,10 @@ const TableSelector: FunctionComponent<TableSelectorProps> = ({
     }
   }, [database, tableSelectMode]);
 
+  useEffect(() => {
+    setCurrentDatabase(database);
+  }, [database]);
+
   useEffect(() => {
     if (tableSelectMode === 'single') {
       setTableSelectValue(