fix: the horizontal scrollbar disappearing in grid view (#3751)

frontend/appflowy_flutter/lib/plugins/database_view/grid/presentation/grid_page.dart

@@ -389,6 +389,7 @@ class _WrapScrollView extends StatelessWidget {
       barSize: GridSize.scrollBarSize,
       autoHideScrollbar: false,
       child: StyledSingleChildScrollView(
+        autoHideScrollbar: false,
         controller: scrollController.horizontalController,
         axis: Axis.horizontal,
         child: SizedBox(

frontend/appflowy_flutter/packages/flowy_infra_ui/lib/style_widget/scrolling/styled_scrollview.dart

@@ -11,6 +11,7 @@ class StyledSingleChildScrollView extends StatefulWidget {
   final ScrollController? controller;
   final EdgeInsets? scrollbarPadding;
   final double barSize;
+  final bool autoHideScrollbar;
 
   final Widget? child;
 
@@ -24,6 +25,7 @@ class StyledSingleChildScrollView extends StatefulWidget {
     this.controller,
     this.scrollbarPadding,
     this.barSize = 8,
+    this.autoHideScrollbar = true,
   }) : super(key: key);
 
   @override
@@ -58,6 +60,7 @@ class StyledSingleChildScrollViewState
   @override
   Widget build(BuildContext context) {
     return ScrollbarListStack(
+      autoHideScrollbar: widget.autoHideScrollbar,
       contentSize: widget.contentSize,
       axis: widget.axis,
       controller: scrollController,