Enable calorimeter hit merging by functions #8278

Job	Run time
env	1s
detector-info	32s
list-open-prs	4s
build (gcc, Release, nightly)	1m 32s
build (gcc, Debug, nightly)	1m 30s
build (clang, Release, nightly)	1m 18s
build (clang, Debug, nightly)	1m 24s
build (clang, Release, 24.04.0-stable, clang++)	1m 31s
build (clang, Release, 24.05.2-stable)	1m 15s
npsim-gun-EcalLumiSpec (e, ip6_extended)	27s
npsim-gun (pi, craterlake)	35s
npsim-dis (10x100, 1000, craterlake_tracking_only)	29s
npsim-gun (e, craterlake)	26s
npsim-minbias (5x41, craterlake_5x41)	33s
npsim-dis (18x275, 1000, craterlake_18x275)	51s
npsim-minbias (10x100, craterlake)	26s
npsim-minbias (18x275, craterlake_18x275)	27s
clang-tidy-iwyu	0s
llvm-cov	0s
eicrecon-two-stage-running	0s
eicrecon-eicmkplugin	0s
eicrecon-benchmarks-plugins	0s
eicrecon-dis	0s
eicrecon-gun	0s
eicrecon-gun-EcalLumiSpec	0s
eicrecon-test-plugins	0s
build-docs	0s
trigger-container	0s
get-docs-from-open-prs	0s
get-docs-from-main	0s
collect-docs	0s
deploy-docs	0s
	13m 21s

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