RPATH sanity check fails for LAMMPS when (not all) dependencies are installed with RPATH

[boegel]

I saw this when testing #3244

== FAILED: Installation ended unsuccessfully: Sanity check failed: Library libhdf5_hl.so.310 not found for
/user/gent/400/vsc40023/eb_arcaninescratch/RHEL8-eb5dev/zen2-ib/software/LAMMPS/2Aug2023_update2-foss-2023a-kokkos/bin/lmp
Library libbz2.so.1.0 not found for /user/gent/400/vsc40023/eb_arcaninescratch/RHEL8-eb5dev/zen2-ib/software/LAMMPS/2Aug2023_update2-foss-2023a-kokkos/bin/lmp
Library libhdf5_hl.so.310 not found for /user/gent/400/vsc40023/eb_arcaninescratch/RHEL8-eb5dev/zen2-ib/software/LAMMPS/2Aug2023_update2-foss-2023a-kokkos/lib/liblammps.so.0
Library libbz2.so.1.0 not found for /user/gent/400/vsc40023/eb_arcaninescratch/RHEL8-eb5dev/zen2-ib/software/LAMMPS/2Aug2023_update2-foss-2023a-kokkos/lib/liblammps.so.0
Library libhdf5_hl.so.310 not found for /user/gent/400/vsc40023/eb_arcaninescratch/RHEL8-eb5dev/zen2-ib/software/LAMMPS/2Aug2023_update2-foss-2023a-kokkos/lib64/liblammps.so.0
Library libbz2.so.1.0 not found for /user/gent/400/vsc40023/eb_arcaninescratch/RHEL8-eb5dev/zen2-ib/software/LAMMPS/2Aug2023_update2-foss-2023a-kokkos/lib64/liblammps.so.0 (took 23 mins 13 secs)

The libbz2.so.1.0 could perhaps be explained by not having bzip2 listed as a direct dependency, but HDF5 is a direct dependency so I'm not sure why libhdf5_hl.so.310 can't be found...

[boegel]

RPATH sanity was relaxed in easybuilders/easybuild-framework#4475 by not unsetting $LD_LIBRARY_PATH by default anymore, which fixes the problem when installing LAMMPS with --rpath on top of dependencies that were not installed with RPATH linking.

Problem is of course still there in same context when eb --strict-rpath-sanity-check is used, but that makes sense, so this can be closed...