macOS

shape.h: remove YJIT workaround #643

Job	Run time
make (check, macos-14, --with-gmp)	6m 54s
make (check, macos-15)	6m 16s
make (test-bundled-gems, macos-14)	10m 3s
make (test-all, --repeat-count=2, macos-14)	8m 30s
make (check, macos-14, --with-jemalloc --with-opt-dir=$(brew --prefix jemalloc))	8m 6s
make (check, macos-14, --with-gcc=gcc-14)	9m 28s
make (check, macos-13)	12m 15s
make (test-bundler-parallel, macos-14)	23m 10s
make (check, macos-14)	5m 30s
macOS result	3s
	1h 30m 15s

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