Clear account tokens before refresh (#18452) (#18470)

* clear account tokens on refresh

* update refresh button after refresh

src/sql/workbench/services/connection/browser/connectionWidget.ts

@@ -418,6 +418,7 @@ export class ConnectionWidget extends lifecycle.Disposable {
 				if (account) {
 					await this._accountManagementService.refreshAccount(account);
 					await this.fillInAzureAccountOptions();
+					this.updateRefreshCredentialsLink();
 				}
 			}));
 		}