Skip Nb Sticky Scroll testing on web platform. (microsoft#191716)

* test change

* skip notebook sticky scroll testing on web

Author: Yoyokrazy

src/vs/workbench/contrib/notebook/test/browser/notebookStickyScroll.test.ts

@@ -4,6 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as assert from 'assert';
+import { isWeb } from 'vs/base/common/platform';
 import { Event } from 'vs/base/common/event';
 import { DisposableStore } from 'vs/base/common/lifecycle';
 import { mock } from 'vs/base/test/common/mock';
@@ -19,7 +20,7 @@ import { createNotebookCellList, setupInstantiationService, withTestNotebook } f
 import { OutlineTarget } from 'vs/workbench/services/outline/browser/outline';
 
 
-suite('NotebookEditorStickyScroll', () => {
+(isWeb ? suite.skip : suite)('NotebookEditorStickyScroll', () => {
 
 	let disposables: DisposableStore;
 	let instantiationService: TestInstantiationService;
@@ -92,7 +93,6 @@ suite('NotebookEditorStickyScroll', () => {
 
 				const notebookOutlineEntries = getOutline(editor).entries;
 				const resultingMap = nbStickyTestHelper(domNode, editor, cellList, notebookOutlineEntries);
-
 				await assertSnapshot(resultingMap);
 			});
 	});