ProjectManager: Auto-register build settings aspects

Add the necessary contructor to TriStateAspect, too.

Change-Id: Ieb0f19cdf95f7492380d7c4e5663f455e4da3452
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/libs/utils/aspects.cpp

@@ -2162,8 +2162,11 @@ void DoubleAspect::setSingleStep(double step)
     Its visual representation is a QComboBox with three items.
 */
 
-TriStateAspect::TriStateAspect(const QString &onString, const QString &offString,
+TriStateAspect::TriStateAspect(AspectContainer *container,
+                               const QString &onString,
+                               const QString &offString,
                                const QString &defaultString)
+    : SelectionAspect(container)
 {
     setDisplayStyle(DisplayStyle::ComboBox);
     setDefaultValue(TriState::Default);