Restored deleted constructor (still needed)

src/Insight/UserInterfaces/InsightWindow/Widgets/PanelState.hpp

@@ -6,5 +6,8 @@ namespace Bloom::Widgets
     {
         int size = 0;
         bool open = false;
+
+        PanelState() = default;
+        PanelState(int size, bool open): size(size), open(open) {};
     };
 }