Base: Use explicit pointer syntax for freecad_cast (#20694)

* Base: Use explicit pointer syntax for freecad_cast

This aligns our custom cast with other casts

* All: Use explicit pointer syntax for freecad_cast

src/App/GeoFeatureGroupExtension.cpp

@@ -285,7 +285,7 @@ std::vector<DocumentObject*> GeoFeatureGroupExtension::getScopedObjectsFromLink(
     }
 
     std::vector<App::DocumentObject*> result;
-    auto link = freecad_cast<PropertyLinkBase>(prop);
+    auto link = freecad_cast<PropertyLinkBase*>(prop);
     if (link && link->getScope() == scope) {
         link->getLinks(result);
     }