a11y tests: Ignore "active" flag on toplevel

a11y tests: Ignore "active" flag on toplevel

All the a11y tests were failing for me with a window state diff
like this:

-  state: active enabled resizable sensitive showing visible
+  state: enabled resizable sensitive showing visible

I guess the windows in the CI always gets the focus, but not when
I run it here. Generally focus seems asynchronous and hard to rely
on so I just made the test ignore the active state on toplevels.