Layout mismatch of View

[Sichao25]

pcms mdspan are currently defined with Kokkos::layout_right regardless of memory space. While this ensures layout consistency, it causes extra complexity and potential pitfalls when copying or creating Rank2View from a default Kokkos View. For now, a helper function is used to handle layout mismatches.

This design may be worth revisiting. One option is to enforce a uniform layout across all Kokkos Views in future development and input/output.

[Sichao25]

Based on the online discussion, we will use the default layout for the current memory space instead of hard-coded layout_right in mdspan, replacing the existing helper function.

[Sichao25]

Closed with #316 .