fix(ios): correctly redraw Canvas on cell reuse

Author: farfromrefug

src/collectionview/index.ios.ts

@@ -1000,6 +1000,9 @@ export class CollectionView extends CollectionViewBase {
         const cellView: View = cell.view;
         if (!firstRender && cellView['isLayoutRequired']) {
             this.layoutCell(indexPath.row, cell, cellView);
+        } else {
+            // if the cell view is a canvas we need to ensure redraw is called
+            ((cellView as ContentView).content || cellView).nativeViewProtected.setNeedsDisplay();
         }
         return cell;
     }