QmlDesigner: Refactor resolveToProperty method to use QStringView and modern C++ ranges

- Changed the binding variable type from QString to QStringView for
improved performance.
- Utilized std::ranges and std::views to simplify string manipulation
and element extraction.
- Enhanced readability and efficiency by removing redundant string
operations.
- Ensured consistent return of AbstractProperty when node or element is
invalid.

Change-Id: Id221e665211aa3f0354c7cf4de15bb3fc1e90d51
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/plugins/qmldesigner/libs/designercore/model/bindingproperty.cpp

@@ -127,26 +127,23 @@ AbstractProperty BindingProperty::resolveToProperty() const
     if (!isValid())
         return {};
 
-    QString binding = expression();
+    QStringView binding = expression();
 
     if (binding.isEmpty())
         return {};
 
     ModelNode node = parentModelNode();
-    QString element;
+    auto lastElementBegin = std::ranges::find(binding | std::views::reverse, u'.').base();
-    if (binding.contains(QLatin1Char('.'))) {
+    QStringView lastElement{lastElementBegin, binding.end()};
-        element = binding.split(QLatin1Char('.')).constLast();
+    if (binding.begin() != lastElementBegin) {
-        QString nodeBinding = binding;
+        QStringView nodeBinding{binding.begin(), std::prev(lastElementBegin)};
-        nodeBinding.chop(element.length());
         node = resolveBinding(nodeBinding, parentModelNode());
-    } else {
-        element = binding;
     }
 
-    if (node.isValid() && !element.contains(' '))
+    if (node.isValid() && !lastElement.contains(' '))
-        return node.property(element.toUtf8());
+        return node.property(lastElement.toUtf8());
-    else
+
-        return AbstractProperty();
+    return {};
 }
 
 bool BindingProperty::isList() const