Fix chemistry‑related bugs #2117

Job	Run time
Detect File Changes	10s
Self Hosted (gpu, gt)	1h 20m 11s
Self Hosted (cpu, gt)	55m 50s
Self Hosted (gpu, frontier)	2h 27m 28s
Github (ubuntu, mpi, debug, true)	1h 10m 35s
Github (ubuntu, mpi, debug, false)	2h 45m 22s
Github (macos, mpi, debug, false)	55m 21s
Github (ubuntu, mpi, no-debug, true)	1h 17m 36s
Github (ubuntu, mpi, no-debug, false)	1h 54m 15s
Github (macos, mpi, no-debug, false)	46m 36s
Github (ubuntu, no-mpi, single, no-debug, false)	26m 19s
	13h 59m 43s

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