Query limits are not applied properly since the prometheus upgrade

[rajagopalanand]

PR #5593 introduced changes in how context is passed. Context is now passed to the select method. Previously, context was stored in querier and the query limiter that was stored in the context could be shared across multiple select method calls. Now, since the query limiter is newly constructed in setupFromCtx on every select function call, the limits are not being applied correctly and can potentially result in out of memory errors. The limit is now applied per select call instead of per query which would allow queries that result in multiple select calls to use significantly higher memory

[yeya24]

Resolved by #5627