New rule to warn about SubPage.SomeAction.Invoke();

[NKarolak]

Imagine this test code:

SubPage.OpenView();
..
SubPage.GoToRecord(..);
SubPage.SomeAction.Invoke();

SubPage is a page of type ListPart.
When you open a ListPart directly in the client, no actions are visible. The same happens during test run, resulting in the following error: "The action with ID = xxx is not found on the page."

The fix is to work with the main page instead:

MainPage.OpenView();
..
MainPage.GoToRecord(..);
MainPage.SubPage.First();
MainPage.SubPage.SomeAction.Invoke();

For further reference, see Viva Engage.