Try to make smoke tests more stable (#15212)

* make sure dialog buttons are not disabled

* use 'enter' to close connect dialog

* retry clikcing the Connect button

* wait for dialog gone after reclicking

* pr comments + add logging

* use debug to log

* close toasts before clicking dialog buttons

* await close notification toast call

* click python wizard buttons instead of enter

test/automation/src/sql/notificationToast.ts

@@ -0,0 +1,27 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { Code } from '../code';
+
+export class NotificationToast {
+
+	constructor(private readonly code: Code) { }
+
+	async closeNotificationToasts() {
+		const notificationToastSelector = 'div[class="notifications-toasts visible"]';
+		const notificationToastCloseButton = `a[class="action-label codicon codicon-notifications-clear"][role="button"]`;
+		let numberOfToasts = 0;
+
+		await this.code.waitForElements(notificationToastSelector, false, result => {
+			numberOfToasts = result.length;
+			return true;
+		});
+
+		for (let i = 0; i < numberOfToasts; i++) {
+			await this.code.waitAndClick(notificationToastSelector);
+			await this.code.waitAndClick(notificationToastCloseButton);
+		}
+	}
+}