Fix build error for toolchain upgrade

Fix build error for toolchain upgrade

model-loader.cpp
[   61s] /home/abuild/rpmbuild/BUILD/dali2-toolkit-2.2.33/dali-scene3d/public-api/loader/model-loader.cpp:136:72: error: moving a temporary object prevents copy elision [-Werror=pessimizing-move]
[   61s]   136 |   Dali::Scene3D::Loader::ResourceRefCounts resourceRefCount = std::move(mLoadResult.mResources.CreateRefCounter());
[   61s]       |                                                               ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Change-Id: I0d4f08938e9f96918ba7407aacd59f7975fde264