The root cause of the TestPromoteQueuedWhileRequiresActionMixedTools
flake (CODAGT-425) was the subscriber out-of-order durable message
delivery bug, fixed by PR #25433 (ec1e861). All five CI failures
predate that fix. Zero failures since.
This change hardens the subscriber event-drain pattern in both
PromoteQueued requires_action tests: wrap the channel select in a
for-loop so interleaved non-target events (status, queue_update,
message_parts) are consumed in the same Eventually tick instead of
each burning a 25ms interval. This is defense-in-depth for slow CI
runners, not a standalone bug fix.
Closescoder/internal#1523
Closes CODAGT-425
Mathias Fredriksson
12f082c864