[PWGCF/FemtoUniverse] Add pT histo with only primaries.

[davkk]

This PR adds a new $p_T$ histogram to FemtoUniverseParticleHisto only from primaries, for correct reconstruction efficiency calculation.

[alibuild]

Error while checking build/O2Physics/o2 for 7c9d45d at 2025-03-27 19:44:

## sw/BUILD/ONNXRuntime-latest/log
CMake Error at /sw/slc9_x86-64/CMake/v3.31.6-1/share/cmake-3.31/Modules/FindProtobuf.cmake:613 (file):
CMake Error at /sw/slc9_x86-64/CMake/v3.31.6-1/share/cmake-3.31/Modules/FindProtobuf.cmake:619 (math):
CMake Error at /sw/slc9_x86-64/CMake/v3.31.6-1/share/cmake-3.31/Modules/FindProtobuf.cmake:620 (math):
CMake Error at /sw/slc9_x86-64/CMake/v3.31.6-1/share/cmake-3.31/Modules/FindProtobuf.cmake:621 (math):

Full log here.

[vkucera]

@zchochul There are many directives disabling O2 linter tests without any given reason. Why?