Do not expose Celerity internals in installed headers #4744

Job	Run time
read-build-matrix	9s
clang-tidy	9m 3s
build-and-test (dpcpp, ad494e9d, false, 22.04, intel, Debug)	9m 32s
build-and-test (dpcpp, ad494e9d, false, 22.04, intel, Release)	9m 28s
build-and-test (dpcpp, latest, true, 24.04, intel, Debug)	10m 36s
build-and-test (dpcpp, latest, true, 24.04, intel, Release)	10m 38s
build-and-test (acpp, v24.06.0, false, 22.04, nvidia, Debug)	8m 48s
build-and-test (acpp, v24.06.0, false, 22.04, nvidia, Release)	11m 22s
build-and-test (acpp, latest, true, 24.04, nvidia, Debug)	12m 36s
build-and-test (acpp, latest, true, 24.04, nvidia, Release)	14m 4s
build-and-test (simsycl, HEAD, true, 24.04, intel, Release)	7m 33s
build-and-test (simsycl, HEAD, true, 24.04, intel, Debug)	12m 22s
report	22s
tag-latest-containers	0s
	1h 56m 33s

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