effects/windowview: Fix "active class" mode
Each screen has its own WindowHeap. So setting WindowHeap.activeClass won't be visible on other screens.
In order to address that limitation, we could monitor Workspace.activeClient property.
Each screen has its own WindowHeap. So setting WindowHeap.activeClass won't be visible on other screens.
In order to address that limitation, we could monitor Workspace.activeClient property.