Add debug log for work unit payloads #3234

Job	Run time
container	5m 13s
lint-receptor	26s
receptor (Go 1.20)	5m 46s
receptor (Go 1.21)	5m 51s
Lint receptorctl / Run `receptorctl` check_format session	14s
Lint receptorctl / Run `receptorctl` check_style session	21s
Receptorctl test coverage (coverage)	1m 8s
Run receptorctl tests / Run `receptorctl` tests-3.10 session	1m 0s
Run receptorctl tests / Run `receptorctl` tests-3.11 session	1m 5s
Run receptorctl tests / Run `receptorctl` tests-3.12 session	1m 0s
Run receptorctl tests / Run `receptorctl` tests-3.8 session	1m 20s
Run receptorctl tests / Run `receptorctl` tests-3.9 session	1m 4s
	24m 28s

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