As discussed: we will need a unit test in AMReX that uses the pure SoA particle container with the `PolymorphicArenaAllocator` 🙏 Needed for: - https://github.com/AMReX-Codes/pyamrex/issues/425 - https://github.com/BLAST-WarpX/warpx/issues/5779 - https://github.com/BLAST-ImpactX/impactx/issues/901 - https://github.com/Hi-PACE/hipace/issues/1217