Do not expose Celerity internals in installed headers #4736

Job	Run time
read-build-matrix	8s
clang-tidy	10m 1s
build-and-test (dpcpp, ad494e9d, false, 22.04, intel, Debug)	7m 41s
build-and-test (dpcpp, ad494e9d, false, 22.04, intel, Release)	8m 15s
build-and-test (dpcpp, latest, true, 24.04, intel, Debug)	8m 5s
build-and-test (dpcpp, latest, true, 24.04, intel, Release)	8m 16s
build-and-test (acpp, v24.06.0, false, 22.04, nvidia, Debug)	5m 12s
build-and-test (acpp, v24.06.0, false, 22.04, nvidia, Release)	7m 5s
build-and-test (acpp, latest, true, 24.04, nvidia, Debug)	6m 52s
build-and-test (acpp, latest, true, 24.04, nvidia, Release)	8m 22s
build-and-test (simsycl, HEAD, true, 24.04, intel, Release)	2m 18s
build-and-test (simsycl, HEAD, true, 24.04, intel, Debug)	5m 46s
tag-latest-containers	0s
report	0s
	1h 18m 1s

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