Get rid of \"@@" in tests (#7131) #5148

Job	Run time
build-rewatch (macos-13, x86_64-apple-darwin)	21s
build-compiler (ubuntu-latest, ocaml-variants.5.2.0+options,ocaml-option-static, true, true, true...	2m 45s
build-rewatch (macos-14, aarch64-apple-darwin)	14s
build-compiler (buildjet-2vcpu-ubuntu-2204-arm, ocaml-variants.5.2.0+options,ocaml-option-static,...	3m 48s
build-rewatch (ubuntu-latest, x86_64-unknown-linux-musl)	18s
build-compiler (macos-13, 5.2.0, true)	4m 47s
build-rewatch (buildjet-2vcpu-ubuntu-2204-arm, aarch64-unknown-linux-musl)	16s
build-compiler (macos-14, 5.2.0, true)	2m 5s
build-rewatch (windows-latest, x86_64-pc-windows-gnu)	29s
build-compiler (windows-latest, 5.2.0, true)	2m 57s
build-compiler (ubuntu-latest, ocaml-variants.5.0.0+options,ocaml-option-static)	1m 40s
build-compiler (ubuntu-latest, ocaml-variants.4.14.2+options,ocaml-option-static)	1m 31s
build-compiler (ubuntu-latest, ocaml-variants.4.13.0+options,ocaml-option-static)	1m 35s
package	24s
installationTest (macos-13)	32s
installationTest (macos-14)	15s
installationTest (ubuntu-latest)	13s
installationTest (buildjet-2vcpu-ubuntu-2204-arm)	29s
installationTest (windows-latest)	1m 1s
publish	0s
	25m 40s

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