Fix acoustic source and body force timing#1232

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sbryngelson wants to merge 6 commits intoMFlowCode:masterfrom

sbryngelson:fix/time-stepping-order

Commits on Feb 28, 2026

Fix acoustic source and body force timing

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Regenerate golden files for body force adaptive-dt tests

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Regenerate golden files for all tests affected by timestep timing fix

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Remove unused t_step parameter from s_acoustic_src_calculations

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Regenerate golden metadata with MPI ON on Phoenix

sbryngelson
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Fix misleading docstrings, typos, and add timing comments

sbryngelson
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