test: fix the #576 test-level P1/P2 items — injectable proxy timeout, stubbed watcher, json-report scaffold assertions, relay-state readiness, polled request log, wire-derived outage fences

test: fix the #576 test-level P1/P2 items — injectable proxy timeout, stubbed watcher, json-report scaffold assertions, relay-state readiness, polled request log, wire-derived outage fences #2210