perf: Avoid asyncReadHighestSequenceNr query #1259

Job	Run time
Run test with Postgres	3m 36s
Run test with Postgres	3m 36s
Run test with Postgres	3m 36s
Run test with H2	2m 54s
Run test with H2	2m 54s
Run test with H2	2m 54s
Docs	1m 29s
Docs	1m 29s
Docs	1m 29s
Checks	2m 18s
Checks	2m 18s
Checks	2m 18s
Run test with Postgres and several data partitions	4m 4s
Run test with Postgres and several data partitions	4m 4s
Run test with Postgres and several data partitions	4m 4s
Run test with Postgres and JSONB payload	1m 39s
Run test with Postgres and JSONB payload	1m 39s
Run test with Postgres and JSONB payload	1m 39s
Run test with SQL Server	1m 7s
Run test with SQL Server	4m 0s
Run test with SQL Server	6m 16s
Run tests with Yugabyte	4m 19s
Run tests with Yugabyte	4m 19s
Run tests with Yugabyte	4m 19s
	1h 12m 20s

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