Prefer to use BaseClass's isDerivedFrom<T> over non template or Base::Type's

Regex based changes, manually verified

src/App/DocumentObserver.cpp

@@ -177,7 +177,7 @@ void DocumentObjectT::operator=(const DocumentObject* obj)
 void DocumentObjectT::operator=(const Property* prop)
 {
     if (!prop || !prop->hasName() || !prop->getContainer()
-        || !prop->getContainer()->isDerivedFrom(App::DocumentObject::getClassTypeId())) {
+        || !prop->getContainer()->isDerivedFrom<App::DocumentObject>()) {
         object.clear();
         label.clear();
         document.clear();