Query: Data selection time should be tracked independent of query priority

[yeya24]

Describe the bug

If query priority is disabled, rejectQueryOrSetPriority is returned immediately

cortex/pkg/querier/tripperware/query_attribute_matcher.go

Line 21 in 12412e6

return nil

Then the data selection min and max time are not set in the request stats.

cortex/pkg/querier/tripperware/query_attribute_matcher.go

Line 43 in 12412e6

reqStats.SetDataSelectMaxTime(maxTime)

Data selection range should be tracked even of query priority is disabled for query stats purpose.