GH-143732: SEND specialization #3045

Job	Run time
x86_64-unknown-linux-gnu/gcc-free-threading	6m 48s
aarch64-unknown-linux-gnu/gcc	7m 33s
x86_64-unknown-linux-gnu/gcc	10m 34s
aarch64-apple-darwin/clang	10m 44s
x86_64-apple-darwin/clang	16m 0s
	51m 39s

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