Add support for find in notebook editor (#9471)

Author: DonJayamanne

news/1 Enhancements/9470.md

@@ -0,0 +1 @@
+Add support for `Find` in the `Notebook Editor`.

src/client/common/application/webPanels/webPanel.ts

@@ -38,6 +38,7 @@ export class WebPanel implements IWebPanel {
                 enableScripts: true,
                 retainContextWhenHidden: true,
                 localResourceRoots: [Uri.file(this.options.rootPath)],
+                enableFindWidget: true,
                 portMapping: port ? [{ webviewPort: RemappedPort, extensionHostPort: port }] : undefined
             });
         this.loadPromise = this.load();