refactor: remove redundant _afterScroll call after creating grid rows (#11917)

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: vursen

packages/grid/src/vaadin-grid-mixin.js

@@ -4,7 +4,7 @@
  * This program is available under Apache License Version 2.0, available at https://vaadin.com/license/
  */
 import { TabindexMixin } from '@vaadin/a11y-base/src/tabindex-mixin.js';
-import { animationFrame, microTask } from '@vaadin/component-base/src/async.js';
+import { microTask } from '@vaadin/component-base/src/async.js';
 import { isAndroid, isChrome, isFirefox, isIOS, isSafari, isTouch } from '@vaadin/component-base/src/browser-utils.js';
 import { Debouncer } from '@vaadin/component-base/src/debounce.js';
 import { getClosestElement } from '@vaadin/component-base/src/dom-utils.js';
@@ -360,13 +360,6 @@ export const GridMixin = (superClass) =>
         });
       }
 
-      this.__afterCreateScrollerRowsDebouncer = Debouncer.debounce(
-        this.__afterCreateScrollerRowsDebouncer,
-        animationFrame,
-        () => {
-          this._afterScroll();
-        },
-      );
       return rows;
     }
 

packages/grid/test/dom/__snapshots__/grid.test.snap.js

@@ -776,7 +776,6 @@ snapshots["vaadin-grid basic shadow details opened"] =
 snapshots["vaadin-grid basic shadow hidden column"] = 
 `<div
   id="scroller"
-  scrolling=""
   style=""
 >
   <table
@@ -965,7 +964,6 @@ snapshots["vaadin-grid basic shadow hidden column"] =
 snapshots["vaadin-grid basic shadow hidden column selected"] = 
 `<div
   id="scroller"
-  scrolling=""
   style=""
 >
   <table
@@ -1155,7 +1153,6 @@ snapshots["vaadin-grid basic shadow hidden column selected"] =
 snapshots["vaadin-grid basic shadow with footer"] = 
 `<div
   id="scroller"
-  scrolling=""
   style=""
 >
   <table