Mesh Stack throws NRF_MESH_EVT_SAR_FAILED when LPN replies to a publication set message via friend node

The stock LPN client for Mesh SDK v4.0.0 throws NRF_MESH_EVT_SAR_FAILED when replying to a publication set message via a friend node.

All code, reproduction data and log output is here: https://github.com/siriobalmelli/nrf_mesh_4.0.0_lpn_SAR

I also tried to implement the suggested answer from this thread:

https://devzone.nordicsemi.com/f/nordic-q-a/51486/mesh-sar-time-out 

... this did not work, see this commit:

https://github.com/siriobalmelli/nrf_mesh_4.0.0_lpn_SAR/commit/71b4037cf40857351eaf23773783b9314b43bda7

Thank you.

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