QmlJS: Don't warn user about imports if static info is available

Don't underline the import if a qmldump fails,
but the typeinfo is available via a .qmltypes file. That should allow
users to 'fix' qmldump issues by shipping a .qmltypes file.

Reviewed-by: Erik Verbruggen

src/plugins/qmljstools/qmljsmodelmanager.cpp

@@ -640,3 +640,8 @@ ModelManagerInterface::CppQmlTypeHash ModelManager::cppQmlTypes() const
     QMutexLocker locker(&m_cppTypesMutex);
     return m_cppTypes;
 }
+
+ModelManagerInterface::BuiltinPackagesHash ModelManager::builtinPackages() const
+{
+    return Interpreter::CppQmlTypesLoader::builtinPackages;
+}