feat(policy): subject condition sets prune service/db #6433

Job	Run time
Protocol Buffer Lint and Gencode Up-to-date check	14s
go (examples)	1m 16s
go (sdk)	1m 52s
image build	2m 20s
integration tests	4m 41s
go (service)	3m 1s
license check	1m 5s
otdfctl e2e tests	3m 56s
go (lib/ocrypto)	1m 8s
go (lib/fixtures)	54s
go (lib/flattening)	44s
platform-xtest / cross-client-test	8m 36s
ci	1s
	29m 48s

Provide feedback