fix(android): scrollSize unit fix

Author: farfromrefug

src/collectionview/index.android.ts

@@ -404,7 +404,7 @@ export class CollectionView extends CollectionViewBase {
             object: this,
             eventName,
             scrollOffset: offset / Utils.layout.getDisplayDensity(),
-            scrollSize: (range - extent),
+            scrollSize: (range - extent) / Utils.layout.getDisplayDensity(),
             scrollOffsetPercentage: offset / (range - extent),
             dx,
             dy