Add row focus state checks in edit mode test

Inserted assertions to verify row focus state before and after pressing Escape in the data frame edit mode validation test. This enhances test coverage for row focus behavior.

Author: karangattu

tests/playwright/shiny/components/data_frame/validate_row_selection_edit_mode/test_validate_row_selection_edit_mode.py

@@ -75,7 +75,9 @@ def test_validate_row_selection_in_edit_mode(
     # Tab to the column name, hit enter. Verify the table becomes sorted.
     # Tab to an HTML column name, hit enter. Verify the sort does not update.
     page.keyboard.press("Escape")
+    data_frame._expect_row_focus_state(True, row=1)
     page.keyboard.press("Escape")
+    data_frame._expect_row_focus_state(False, row=1)
     page.keyboard.press("Tab")
     page.keyboard.press("Tab")  # tab to sample number
     page.keyboard.press("Enter")