Fix regression when bounding future tokens #2021

Job	Run time
changes	3s
lint-crlf	4s
check-lockfile	7s
lint-newsfile	39s
Typechecking	1m 25s
check-sampleconfig	44s
check-schema-delta	39s
lint-pydantic	44s
lint	49s
lint-clippy-nightly	0s
lint-clippy	0s
lint-rustfmt	0s
linting-done	3s
calculate-test-jobs	5s
portdb (3.8, 11)	3m 27s
portdb (3.11, 15)	2m 58s
complement (monolith, SQLite)	12m 51s
trial-olddeps	7m 7s
complement (monolith, Postgres)	13m 13s
complement (workers, Postgres)	20m 55s
cargo-bench	0s
cargo-test	0s
trial-pypy	0s
trial (3.8, sqlite, all)	4m 54s
trial (3.8, postgres, 11, all)	11m 40s
trial (3.8, sqlite)	4m 52s
sytest (focal)	8m 51s
sytest (focal, postgres)	10m 30s
sytest (focal, multi-postgres, workers)	13m 42s
sytest (focal, multi-postgres, workers, asyncio)	19m 24s
export-data	2m 31s
tests-done	4s
	2h 22m 21s

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