Querying tablet ids from OLAP YDB takes too long if custom resourse pool is enabled

[vitalyisaev2]

For the context: we try to add a custom resource pool to limit requests emited by YQ to Cloud Logging OLAP YDB (more details are here). This results in a latency more than 10 seconds for a query that access only a system view (no work with data at all):

SELECT DISTINCT(TabletId) 
FROM `/pre-prod_sas/yc.logs.cloud/cc8bajrmntk9q0d1lc0t/logs/origin/aoeoqusjtbo4m549jrom/aoe3cidh5dfee2s6cqu5/af3731rdp83d8gd8fjcv/.sys/primary_index_stats`

This behavior is observed both on SAS and VLA (preprod).

[vitalyisaev2]

Potentially fixed in #19396