chore(test): add extension presence verification after install

Signed-off-by: Tibor Dancs <[email protected]>

Author: ScrewTSW

tests/playwright/src/ai-lab-extension.spec.ts

@@ -72,6 +72,11 @@ test.describe.serial(`AI Lab extension installation and verification`, { tag: '@
         })
         .toBeTruthy();
     });
+    test(`Verify AI Lab extension is installed`, async ({ runner, page, navigationBar }) => {
+      [page, webview] = await handleWebview(runner, page, navigationBar);
+      aiLabPage = new AILabPage(page, webview);
+      await aiLabPage.navigationBar.waitForLoad();
+    });
   });
 
   ['ChatBot', 'Summarizer', 'Code Generation', 'RAG Chatbot', 'Audio to Text', 'Object Detection'].forEach(appName => {