feat: remove uses of force_device_scalars

examples/advection/surface.py

examples/advection/var-velocity.py

examples/advection/weak.py

examples/euler/acoustic_pulse.py

examples/euler/vortex.py

examples/geometry.py

examples/maxwell/cavities.py

examples/wave/var-propagation-speed.py

examples/wave/wave-min-mpi.py

examples/wave/wave-op-mpi.py

examples/wave/wave-op-var-velocity.py

test/test_mpi_communication.py