[ML] Fixing change point menu which can get stuck open (#186063)

The popover menu can sometimes get stuck open. This is possibly an issue
with the `EuiPopover` component.

To reproduce, double click the menu button.


92601fc2-5aa1-4b5c-a831-6ccb3bef69b9

x-pack/plugins/aiops/public/components/change_point_detection/fields_config.tsx

@@ -567,7 +567,7 @@ const FieldPanel: FC<FieldPanelProps> = ({
                     )}
                     iconType="boxesHorizontal"
                     color="text"
-                    onClick={setIsActionMenuOpen.bind(null, true)}
+                    onClick={setIsActionMenuOpen.bind(null, !isActionMenuOpen)}
                   />
                 }
                 isOpen={isActionMenuOpen}