Fix bug in calculating state for non-gappy syncs #753

Job	Run time
lint-newsfile	34s
changes	7s
check-lockfile	6s
lint-crlf	10s
check-sampleconfig	48s
Typechecking	1m 34s
lint	43s
check-schema-delta	37s
lint-pydantic	38s
lint-clippy	0s
lint-clippy-nightly	0s
lint-rustfmt	0s
linting-done	3s
calculate-test-jobs	5s
trial-olddeps	6m 47s
complement (monolith, SQLite)	11m 39s
portdb (3.8, 11)	2m 49s
trial-pypy	0s
complement (monolith, Postgres)	12m 47s
portdb (3.11, 15)	2m 40s
complement (workers, Postgres)	19m 32s
cargo-bench	0s
cargo-test	0s
trial (3.8, sqlite, all)	4m 28s
sytest (focal)	8m 42s
trial (3.8, postgres, 11, all)	9m 58s
sytest (focal, postgres)	10m 48s
trial (3.8, sqlite)	4m 5s
sytest (focal, multi-postgres, workers)	14m 25s
sytest (focal, multi-postgres, workers, asyncio)	20m 20s
export-data	2m 2s
tests-done	2s
	2h 16m 29s

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