Cuda energy tally patch

[jacob-moore22]

Description

Two small bug fixes in the multiphysics app:

1. Missing device update in region/material setup (region_fill.cpp): material_state_setup updated State.MaterialToMeshMaps.elem_in_mat_elem on the device but was missing the corresponding update_device() call for State.MeshtoMaterialMaps.mat_elems_in_elem. This left the mesh-to-material map stale on device (relevant for CUDA/GPU builds), which could cause incorrect material lookups on device.
2. Malformed PVD file breaks ParaView reading (mesh_io.hpp): the entries written to the .pvd collection file had a stray leading space before the time attribute (time= "..." instead of time="...") and used a wider %12.5e format that padded values with leading spaces. This produced malformed XML attributes that ParaView failed to parse correctly. Changed both timestep and time to use %.5e and removed the extra space so the file loads cleanly in ParaView.

Type of change

Please select all relevant options

• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Formatting and/or style fixes
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• Test A : Regression test with OpenMP and CUDA.
• Test B :