Start/end times in query-frontend logs don't reflect step-aligned start/end times

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Is your feature request related to a problem? Please describe.

The align_queries_with_step per-tenant setting can be used to force queries to use start and end times that are multiples of the step. This works well enough but the start/end times that end up in query-frontend logs is the original start/end times which makes it seem like they were not adjusted.

Describe the solution you'd like

If the start/end times are adjusted, the adjusted times should end up in the query log as well as some indication that the start/end times were adjusted.