Further improve JSX preserve output (#7445) #6687

Job	Run time
build-rewatch (macos-13, x86_64-apple-darwin, darwin-x64)	21s
build-compiler (ubuntu-24.04, ocaml-variants.5.3.0+options,ocaml-option-static, true, true, linux...	1m 29s
build-rewatch (macos-14, aarch64-apple-darwin, darwin-arm64)	12s
build-compiler (ubuntu-24.04-arm, ocaml-variants.5.3.0+options,ocaml-option-static, true, true, t...	4m 0s
build-rewatch (ubuntu-24.04, x86_64-unknown-linux-musl, linux-x64)	8s
build-compiler (macos-13, 5.3.0, true, darwin-x64)	3m 41s
build-rewatch (ubuntu-24.04-arm, aarch64-unknown-linux-musl, linux-arm64)	15s
build-compiler (macos-14, 5.3.0, true, darwin-arm64)	2m 18s
build-rewatch (windows-latest, x86_64-pc-windows-gnu, win32-x64)	22s
build-compiler (windows-latest, 5.3.0, true, win32-x64)	3m 26s
build-compiler (ubuntu-24.04, ocaml-variants.5.2.1+options,ocaml-option-static)	1m 52s
build-compiler (ubuntu-24.04, ocaml-variants.5.0.0+options,ocaml-option-static)	2m 7s
build-compiler (ubuntu-24.04, ocaml-variants.4.14.2+options,ocaml-option-static)	1m 52s
pkg-pr-new	48s
installationTest (macos-13, darwin-x64)	34s
installationTest (macos-14, darwin-arm64)	17s
installationTest (ubuntu-24.04, linux-x64)	17s
installationTest (ubuntu-24.04-arm, linux-arm64)	20s
installationTest (windows-latest, win32-x64)	2m 13s
publish	0s
	26m 32s

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