perf: Avoid asyncReadHighestSequenceNr query #1258

Job	Run time
Checks	5m 43s
Checks	5m 43s
Run test with H2	6m 4s
Run test with H2	6m 4s
Run test with Postgres	7m 9s
Run test with Postgres	7m 9s
Docs	4m 17s
Docs	4m 17s
Run test with Postgres and several data partitions	5m 56s
Run test with Postgres and several data partitions	5m 56s
Run test with Postgres and JSONB payload	4m 52s
Run test with Postgres and JSONB payload	4m 52s
Run test with SQL Server	6m 53s
Run test with SQL Server	6m 55s
Run tests with Yugabyte	7m 42s
Run tests with Yugabyte	7m 42s
	1h 37m 14s

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