fix(reorder-group): dragging reorder item to bottom no longer gives out of bounds index (#23797)

resolves #23796

Author: tobysmith568

core/src/components/reorder-group/reorder-group.tsx

@@ -245,17 +245,16 @@ export class ReorderGroup implements ComponentInterface {
 
   private itemIndexForTop(deltaY: number): number {
     const heights = this.cachedHeights;
-    let i = 0;
 
     // TODO: since heights is a sorted array of integers, we can do
     // speed up the search using binary search. Remember that linear-search is still
     // faster than binary-search for small arrays (<64) due CPU branch misprediction.
-    for (i = 0; i < heights.length; i++) {
+    for (let i = 0; i < heights.length; i++) {
       if (heights[i] > deltaY) {
-        break;
+        return i;
       }
     }
-    return i;
+    return heights.length - 1;
   }
 
   /********* DOM WRITE ********* */