Detray Deduction Guides and GPU Code, main branch (2026.09.04.)

@niermann999, I noticed a set of warnings in our experimental Athena build.

```
In file included from /mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Traccc/device/hip/src/fitting/kalman_fitting_algorithm_fit_backward_kernel.hip:13:
In file included from /mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Traccc/device/hip/include/traccc/hip/fitting/kalman_fitting_algorithm.hpp:15:
In file included from /mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Traccc/device/common/include/traccc/fitting/device/kalman_fitting_algorithm.hpp:18:
In file included from /mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Traccc/core/include/traccc/fitting/details/kalman_fitting_types.hpp:11:
In file included from /mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Traccc/core/include/traccc/fitting/kalman_filter/kalman_fitter.hpp:11:
In file included from /mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Traccc/core/include/traccc/fitting/kalman_filter/kalman_actor.hpp:17:
In file included from /mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Traccc/core/include/traccc/fitting/kalman_filter/is_line_visitor.hpp:12:
In file included from /mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Detray/core/include/detray/geometry/surface.hpp:16:
In file included from /mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Detray/core/include/detray/geometry/detail/surface_kernels.hpp:19:
In file included from /mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Detray/core/include/detray/utils/ranges.hpp:14:
In file included from /mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Detray/core/include/detray/utils/ranges/enumerate.hpp:16:
/mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Detray/core/include/detray/utils/ranges/subrange.hpp:148:20: warning: use of CUDA/HIP target attributes on deduction guides is deprecated; they will be rejected in a future version of Clang [-Wdeprecated-attributes]
148 | DETRAY_HOST_DEVICE subrange()
| ^
/mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Detray/core/include/detray/utils/ranges/subrange.hpp:152:20: warning: use of CUDA/HIP target attributes on deduction guides is deprecated; they will be rejected in a future version of Clang [-Wdeprecated-attributes]
152 | DETRAY_HOST_DEVICE subrange(index_t start, index_t end)
| ^
/mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Detray/core/include/detray/utils/ranges/subrange.hpp:156:20: warning: use of CUDA/HIP target attributes on deduction guides is deprecated; they will be rejected in a future version of Clang [-Wdeprecated-attributes]
156 | DETRAY_HOST_DEVICE subrange(deduced_range_t &&range)
| ^
/mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Detray/core/include/detray/utils/ranges/subrange.hpp:162:20: warning: use of CUDA/HIP target attributes on deduction guides is deprecated; they will be rejected in a future version of Clang [-Wdeprecated-attributes]
162 | DETRAY_HOST_DEVICE subrange(deduced_range_t &&range, index_t pos)
| ^
/mnt/hdd1/krasznaa/projects/externals/build/build/AthenaExternals/src/Acts/Detray/core/include/detray/utils/ranges/subrange.hpp:167:20: warning: use of CUDA/HIP target attributes on deduction guides is deprecated; they will be rejected in a future version of Clang [-Wdeprecated-attributes]
167 | DETRAY_HOST_DEVICE subrange(deduced_range_t &&range, index_range_t &&pos)
| ^
```

etc.

It would be worth checking if CUDA needs the `__host__ __device__` attributes. And with which versions. (For both CUDA and HIP.)

Let me also tag @StewMH and @paradajzblond.