2.5.1-wmf8: bugs fix following incident
2.5.1-wmf8: bugs fix following incident

Fix reject clauses in the absence of approvals - T105474
Don't call merger for non live item - T140297

Bug: T105474
Bug: T140297
Change-Id: I8535d64e2e5d6796f62cbc6546852eaa3e9989a2

wikimedia/integration-zuul,wikimedia/integration-zuul,wikimedia/integration-zuul,wikimedia/integration-zuul