Make flaky dataframe test have larger timeout (#675)

Author: schloerke

e2e/data_frame/test_data_frame.py

@@ -130,9 +130,19 @@ def test_sort(
     select_dataset.set("diamonds")
     select_dataset.expect.to_have_value("diamonds")
 
-    # Test sorting
+    # Table cell locators
     header_clarity = grid_container.locator("tr:first-child th:nth-child(4)")
     first_cell_clarity = grid_container.locator("tr:first-child td:nth-child(4)")
+
+    # Test that the table contents have updated
+    # This may timeout unless a larger timeout is given
+    expect(header_clarity).not_to_have_text(
+        "num2",
+        timeout=15 * 1000,  # Larger timeout for CI
+    )
+    expect(first_cell_clarity).not_to_have_text("4")
+
+    # Test sorting
     expect(first_cell_clarity).to_have_text("SI2")
     header_clarity.click()
     expect(first_cell_clarity).to_have_text("I1")