addstyle for simplebar to enable scroll on sidebar

packages/app/src/styles/_vendor.scss

@@ -25,8 +25,5 @@
 // import Handsontable styles
 @import '~handsontable/dist/handsontable.full.css';
 
-// import SimpleBar styles
-@import '~simplebar/dist/simplebar.min.css';
-
 // Emoji-mart style
 @import '~emoji-mart/css/emoji-mart.css';

packages/app/src/styles/style-next.scss

@@ -6,8 +6,10 @@
 @import '~react-bootstrap-typeahead/css/Typeahead';
 @import 'override-rbt';
 
-// // override simplebar-react styles
-// @import 'override-simplebar';
+// import SimpleBar styles
+@import '~simplebar/dist/simplebar.min.css';
+// override simplebar-react styles
+@import 'override-simplebar';
 
 // icons
 @import '~simple-line-icons';