test: add regression coverage for sync plugin hooks (#19589) #50

Job	Run time
compute-hash (aarch64-darwin, macos-latest)	22m 14s
compute-hash (x86_64-darwin, macos-15-intel)	48m 31s
compute-hash (aarch64-linux, blacksmith-4vcpu-ubuntu-2404-arm)	18h 41m 40s
compute-hash (x86_64-linux, blacksmith-4vcpu-ubuntu-2404)	18h 41m 40s
update-hashes	1s
	1d 14h 34m 6s

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