Add index to `current_state_delta_stream` #3833

Job	Run time
lint-newsfile	36s
lint-newsfile	36s
lint-crlf	5s
lint-crlf	5s
changes	2s
changes	2s
check-lockfile	7s
check-lockfile	7s
check-schema-delta	56s
check-schema-delta	56s
Typechecking	1m 36s
Typechecking	1m 36s
lint	35s
lint	35s
lint-pydantic	39s
lint-pydantic	39s
check-sampleconfig	38s
check-sampleconfig	38s
lint-clippy	0s
lint-clippy	0s
lint-clippy-nightly	0s
lint-clippy-nightly	0s
lint-readme	0s
lint-readme	0s
lint-rustfmt	0s
lint-rustfmt	0s
linting-done	3s
linting-done	3s
calculate-test-jobs	7s
calculate-test-jobs	7s
trial-olddeps	7m 2s
trial-olddeps	7m 2s
complement (monolith, SQLite)	13m 40s
complement (monolith, SQLite)	13m 40s
portdb (3.9, 11)	3m 8s
portdb (3.9, 11)	3m 8s
complement (monolith, Postgres)	5m 6s
complement (monolith, Postgres)	15m 10s
portdb (3.13, 17)	3m 19s
portdb (3.13, 17)	3m 19s
cargo-bench	0s
cargo-bench	0s
complement (workers, Postgres)	22m 23s
complement (workers, Postgres)	22m 23s
cargo-test	0s
cargo-test	0s
trial-pypy	0s
trial-pypy	0s
trial (3.9, sqlite, all)	5m 58s
trial (3.9, sqlite, all)	5m 58s
sytest (bullseye)	8m 19s
sytest (bullseye)	8m 19s
trial (3.9, postgres, 11, all)	13m 49s
trial (3.9, postgres, 11, all)	13m 49s
sytest (bullseye, postgres)	10m 0s
sytest (bullseye, postgres)	10m 0s
trial (3.9, sqlite)	5m 15s
trial (3.9, sqlite)	5m 15s
sytest (bullseye, multi-postgres, workers)	13m 34s
sytest (bullseye, multi-postgres, workers)	13m 34s
sytest (bullseye, multi-postgres, workers, asyncio)	19m 12s
sytest (bullseye, multi-postgres, workers, asyncio)	19m 12s
export-data	2m 21s
export-data	2m 21s
tests-done	3s
tests-done	2s
	4h 47m 9s

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