Update @microsoft/vscode-azext-azureauth to 6.0.0-alpha.3 (#1380)

Update TenantTreeItem to use AzureAccount type and fix
MockAzureSubscriptionProvider to include environment property
required by the new version.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: alexweininger

package-lock.json

@@ -926,7 +926,7 @@
     "dependencies": {
         "@azure/arm-resources": "^5.2.0",
         "@azure/arm-resources-profile-2020-09-01-hybrid": "^2.1.0",
-        "@microsoft/vscode-azext-azureauth": "^6.0.0-alpha.2",
+        "@microsoft/vscode-azext-azureauth": "^6.0.0-alpha.3",
         "@microsoft/vscode-azext-azureutils": "^4.0.0",
         "@microsoft/vscode-azext-utils": "^4.0.4",
         "form-data": "^4.0.4",

package.json

@@ -4,6 +4,7 @@
 *--------------------------------------------------------------------------------------------*/
 
 import { TenantIdDescription } from '@azure/arm-resources-subscriptions';
+import { AzureAccount } from '@microsoft/vscode-azext-azureauth';
 import { nonNullValue } from '@microsoft/vscode-azext-utils';
 import * as vscode from 'vscode';
 import { GenericItemOptions } from "../GenericItem";
@@ -16,7 +17,7 @@ export interface TenantItemOptions extends GenericItemOptions {
 export class TenantTreeItem implements ResourceGroupsItem {
     public label: string;
     public tenantId: string;
-    constructor(public readonly tenant: TenantIdDescription, public readonly account: vscode.AuthenticationSessionAccountInformation, private readonly options?: TenantItemOptions) {
+    constructor(public readonly tenant: TenantIdDescription, public readonly account: AzureAccount, private readonly options?: TenantItemOptions) {
         this.label = nonNullValue(this.tenant.displayName);
         this.tenantId = nonNullValue(this.tenant.tenantId);
     }

src/tree/tenants/TenantTreeItem.ts

@@ -4,6 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import type { AzureAccount, AzureSubscription, AzureSubscriptionProvider, AzureTenant, TenantIdAndAccount } from '@microsoft/vscode-azext-azureauth';
+import { getConfiguredAzureEnv } from '@microsoft/vscode-azext-azureauth';
 import type * as vscode from 'vscode';
 import type { MockResources } from './mockServiceFactory';
 
@@ -39,6 +40,7 @@ export class MockAzureSubscriptionProvider implements AzureSubscriptionProvider
         return [{
             id: 'accountId',
             label: 'Mock Account',
+            environment: getConfiguredAzureEnv(),
         }];
     }