workspace: Always set state at the end of overview transition

We don't change to the zoomed out state when fading to the overview,
however we should do that after the transition in case the user
switches to the window picker.

https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2969

js/ui/workspace.js

@@ -1194,11 +1194,13 @@ class Workspace extends St.Widget {
 
     _doneLeavingOverview() {
         this.layout_manager.layout_frozen = false;
+        this.layout_manager.stateAdjustment.value = 0;
         this._windows.forEach(w => (w.opacity = 255));
     }
 
     _doneShowingOverview() {
         this.layout_manager.layout_frozen = false;
+        this.layout_manager.stateAdjustment.value = 1;
         this._windows.forEach(w => (w.opacity = 255));
     }