feat(explore): Add empty state to annotations (#20160)

* feat(explore): Add empty state to annotations

* Set line height for small empty state description

* Simplify code

superset-frontend/src/explore/components/controls/SelectControl.jsx

@@ -53,6 +53,7 @@ const propTypes = {
   placeholder: PropTypes.string,
   filterOption: PropTypes.func,
   tokenSeparators: PropTypes.arrayOf(PropTypes.string),
+  notFoundContent: PropTypes.object,
 
   // ControlHeader props
   label: PropTypes.string,
@@ -179,6 +180,7 @@ export default class SelectControl extends React.PureComponent {
       showHeader,
       value,
       tokenSeparators,
+      notFoundContent,
       // ControlHeader props
       description,
       renderTrigger,
@@ -245,6 +247,7 @@ export default class SelectControl extends React.PureComponent {
       sortComparator: this.props.sortComparator,
       value: getValue(),
       tokenSeparators,
+      notFoundContent,
     };
 
     return (