git-lfs issue

@mwestphal I just did a git clone git@gitlab.kitware.com:vtk/vtk-examples.git and encountered this message:

Encountered 1 file that should have been a pointer, but wasn't:
        src/Testing/Baseline/Cxx/Rendering/TestWebGPU_PointCloudMapper.png

The file is a PNG file in the folder so I assumed that there wasn´t converted to lfs but:

git lfs push --dry-run  ./src/Testing/Baseline/Cxx/Rendering/TestWebGPU_PointCloudMapper.png

but there is no message. It is obviously something I did when this was merged but I don´t know what I did and how to fix it.