Fix jump to character for Collections and Discover

Fix for a regression introduced in react-virtualized 9.21.2 when WindowScroller is used with Grids

frontend/src/Collection/Overview/CollectionOverviews.js

@@ -92,15 +92,14 @@ class CollectionOverviews extends Component {
 
     if (this._grid && scrollTop !== 0 && !scrollRestored) {
       this.setState({ scrollRestored: true });
-      this._grid.scrollToPosition({ scrollTop });
+      this._gridScrollToPosition({ scrollTop });
     }
 
     if (jumpToCharacter != null && jumpToCharacter !== prevProps.jumpToCharacter) {
       const index = getIndexOfFirstCharacter(items, jumpToCharacter);
 
       if (this._grid && index != null) {
-
-        this._grid.scrollToCell({
+        this._gridScrollToCell({
           rowIndex: index,
           columnIndex: 0
         });
@@ -186,6 +185,19 @@ class CollectionOverviews extends Component {
     );
   };
 
+  _gridScrollToCell = ({ rowIndex = 0, columnIndex = 0 }) => {
+    const scrollOffset = this._grid.getOffsetForCell({
+      rowIndex,
+      columnIndex
+    });
+
+    this._gridScrollToPosition(scrollOffset);
+  };
+
+  _gridScrollToPosition = ({ scrollTop = 0, scrollLeft = 0 }) => {
+    this.props.scroller?.scrollTo({ top: scrollTop, left: scrollLeft });
+  };
+
   //
   // Listeners