Change Cancel to OK button

Author: pbrod

traitsui/tests/editors/test_range_editor_text.py

@@ -153,7 +153,7 @@ def test_text_editing_out_of_bounds(self):
             assert displayed == '4'
             assert num.number == 3
 
-            cancel_button = tester.find_by_id(ui, "Cancel")
+            cancel_button = tester.find_by_id(ui, "OK")
             cancel_button.perform(command.MouseClick())
 
         assert num.number == 4