Load prebuilt macros #8256

Job	Run time
check-rust	4m 3s
check-website	17s
scarb-metadata compatibility check	49s
build test linux x86-64	4m 48s
build test windows x86-64	9m 14s
doc tests	3m 27s
test prebuilt plugins macos arm64	3m 58s
test prebuilt plugins macos x86-64	6m 5s
test linux x86-64 1/8	22m 24s
test linux x86-64 2/8	26m 53s
test linux x86-64 3/8	22m 34s
test linux x86-64 4/8	18m 9s
test linux x86-64 5/8	15m 10s
test linux x86-64 6/8	16m 8s
test linux x86-64 7/8	12m 4s
test linux x86-64 8/8	15m 10s
test windows x86-64 1/8	20m 39s
test windows x86-64 2/8	24m 19s
test windows x86-64 3/8	21m 14s
test windows x86-64 4/8	15m 32s
test windows x86-64 5/8	15m 54s
test windows x86-64 6/8	14m 45s
test windows x86-64 7/8	11m 41s
test windows x86-64 8/8	14m 5s
	5h 19m 22s

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