Clean up named attribute construction. NFC. (#19813) #34107

Job	Run time
setup / setup	5s
runtime_small	2m 14s
runtime :: ubuntu-24.04	1m 15s
runtime :: ubuntu-24.04-arm	1m 34s
runtime :: windows-2022	3m 18s
runtime :: macos-14	1m 40s
runtime_tracing :: ubuntu-24.04 :: tracy	1m 17s
runtime_tracing :: ubuntu-24.04 :: console	2m 7s
runtime_tracing :: ubuntu-24.04-arm :: tracy	1m 2s
runtime_tracing :: ubuntu-24.04-arm :: console	1m 8s
runtime_tracing :: windows-2022 :: tracy	3m 4s
runtime_tracing :: windows-2022 :: console	2m 17s
runtime_tracing :: macos-14 :: tracy	1m 7s
runtime_tracing :: macos-14 :: console	59s
linux_x64_bazel / linux_x64_bazel	24m 21s
linux_x64_clang / linux_x64_clang	1s
linux_x64_clang_asan / linux_x64_clang_asan	1s
ci_summary / summary	2s
	47m 32s

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