Fix Popover proptypes (#16560)

frontend/src/metabase/components/Popover.jsx

@@ -31,7 +31,6 @@ export default class Popover extends Component {
     isOpen: PropTypes.bool,
     hasArrow: PropTypes.bool,
     hasBackground: PropTypes.bool,
-    // target: PropTypes.oneOfType([PropTypes.func, PropTypes.node]),
     tetherOptions: PropTypes.object,
     // used to prevent popovers from being taller than the screen
     sizeToFit: PropTypes.bool,
@@ -58,10 +57,10 @@ export default class Popover extends Component {
     onClose: PropTypes.func,
     className: PropTypes.string,
     style: PropTypes.object,
-    children: PropTypes.element,
+    children: PropTypes.oneOfType([PropTypes.element, PropTypes.func]),
     dismissOnClickOutside: PropTypes.func,
     dismissOnEscape: PropTypes.func,
-    target: PropTypes.object,
+    target: PropTypes.oneOfType([PropTypes.func, PropTypes.node]),
     targetEvent: PropTypes.object,
   };