Fix query tab view: respect default setting and add toggle behavior (#2516)

* Fix query tab view: respect default setting and add toggle behavior

- Use getDefaultQueryResultsView() when splitterDirection prop is not
  provided, so the user's configured default from Settings is respected
- Add onCommandClick to the View split button that toggles between
  Vertical and Horizontal layout when the main button is clicked

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

* Add Playwright E2E tests for query tab View toggle and dropdown

- Add View to CommandBarButton enum in test fixtures
- Add test: clicking main View button toggles between vertical/horizontal
- Add test: selecting options from View dropdown changes layout

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

* Add Playwright E2E tests for query tab View toggle and dropdown

- Add View to CommandBarButton enum in test fixtures
- Add test: clicking main View button toggles between vertical/horizontal
- Add test: selecting options from View dropdown changes layout

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

* Fix issue that was failing tests when using account keys for access.

* Remove commented code.

---------

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

test/fx.ts

@@ -122,9 +122,6 @@ export async function getTestExplorerUrl(accountType: TestAccount, options?: Tes
   params.set("feature.enableCopilot", "false");
 
   const nosqlRbacToken = getNoSqlRbacToken();
-  if (!nosqlRbacToken) {
-    throw new Error("No NOSQL RBAC token found.");
-  }
 
   const nosqlReadOnlyRbacToken = process.env.NOSQL_READONLY_TESTACCOUNT_TOKEN;
   const nosqlContainerCopyRbacToken = process.env.NOSQL_CONTAINERCOPY_TESTACCOUNT_TOKEN;
@@ -411,6 +408,7 @@ export enum CommandBarButton {
   ExecuteQuery = "Execute Query",
   UploadItem = "Upload Item",
   NewDocument = "New Document",
+  View = "View",
 }
 
 /** Helper class that provides locator methods for DataExplorer components, on top of a Frame */