Ensure that incoming to-device messages are not dropped #1010

Job	Run time
changes	4s
lint-crlf	7s
lint-newsfile	34s
check-lockfile	5s
check-sampleconfig	42s
check-schema-delta	37s
Typechecking	1m 23s
lint	41s
lint-pydantic	38s
lint-clippy	0s
lint-clippy-nightly	0s
lint-rustfmt	0s
linting-done	3s
calculate-test-jobs	7s
trial-olddeps	6m 47s
complement (monolith, SQLite)	12m 23s
portdb (3.8, 11)	2m 49s
trial-pypy	0s
complement (monolith, Postgres)	13m 17s
portdb (3.11, 15)	2m 58s
complement (workers, Postgres)	20m 13s
cargo-bench	0s
cargo-test	0s
trial (3.8, sqlite, all)	4m 40s
sytest (focal)	8m 5s
trial (3.8, postgres, 11, all)	10m 5s
sytest (focal, postgres)	10m 1s
trial (3.8, sqlite)	4m 6s
sytest (focal, multi-postgres, workers)	13m 25s
sytest (focal, multi-postgres, workers, asyncio)	19m 14s
export-data	2m 12s
tests-done	8s
	2h 15m 24s

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