chore(vscode): update to 1.53.2

These conflicts will be resolved in the following commits. We do it this way so
that PR review is possible.

lib/vscode/extensions/simple-browser/src/simpleBrowserManager.ts

@@ -0,0 +1,38 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as vscode from 'vscode';
+import { ShowOptions, SimpleBrowserView } from './simpleBrowserView';
+
+export class SimpleBrowserManager {
+
+	private _activeView?: SimpleBrowserView;
+
+	constructor(
+		private readonly extensionUri: vscode.Uri,
+	) { }
+
+	dispose() {
+		this._activeView?.dispose();
+		this._activeView = undefined;
+	}
+
+	public show(url: string, options?: ShowOptions): void {
+		if (this._activeView) {
+			this._activeView.show(url, options);
+		} else {
+			const view = new SimpleBrowserView(this.extensionUri, url, options);
+			view.onDispose(() => {
+				if (this._activeView === view) {
+					this._activeView = undefined;
+				}
+			});
+
+			this._activeView = view;
+		}
+	}
+}
+
+