Read hypertable max time value with an ordered scan #38350

Job	Run time
check_paths	9s
Update test PG18 direct	4m 39s
Update test PG16 direct	10m 47s
Update test PG16 singlestep	12m 57s
Update test PG17 direct	6m 56s
Update test PG17 singlestep	7m 40s
Update test PG18 singlestep	5m 3s
Update and Downgrade summary	7s
	48m 18s

Provide feedback