refactor/emcomposition_field_handling #9771

Job	Run time
build (3.7, x64, ubuntu)	55m 58s
build (3.7, x64, windows)	53m 5s
build (3.11, x64, ubuntu)	1h 22m 48s
build (3.11, x64, macos)	28m 47s
build (3.11, x64, windows)	1h 24m 53s
build (3.12, x64, ubuntu)	1h 21m 57s
build (3.12, x64, macos)	37m 45s
build (3.12, x64, windows)	1h 23m 48s
build (3.9, macos, --cov=psyneulink)	43m 28s
build (3.9, ubuntu, --forked -m "not llvm")	33m 48s
build (3.8, x86, windows)	1h 28m 21s
build (3.10, ubuntu, --fp-precision=fp32)	1h 22m 25s
build (3.10, macos, -m benchmark --benchmark-enable --benchmark-only --benchmark-min-rounds=2 --b...	25m 22s
build (3.7, x64, ubuntu, min)	56m 13s
build (3.8, macos)	30m 30s
	14h 29m 8s

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