add mouseover event for slim-scrol

packages/app/src/client/util/smooth-scroll.ts

@@ -23,6 +23,11 @@ export const jQuerySlimScrollIntoView = (scrollableElement: HTMLElement, scrollT
 
   const scrollTo = targetTop - offsetTop;
   (<any>$(scrollableElement)).slimScroll({ scrollTo });
+  /**
+   * the following code is a workaround since the scrollbar doesn't move without mouseover event after applying slimscroll
+   * https://github.com/rochal/jQuery-slimScroll/issues/287#issuecomment-797090432
+   */
+  (<any>$(scrollableElement)).trigger('mouseover');
 };
 
 export type SmoothScrollEventCallback = (elem: HTMLElement) => void;