Allow null 'format' in DateRangeAggregation#352

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pmishev wants to merge 2 commits intoongr-io:7.2from

pmishev:7.2-daterangeaggregation-fix

Commits on Mar 11, 2021

Allow null 'format' in DateRangeAggregation, as it is not required
pmishev
committed

Commits on Jun 15, 2022

Merge remote-tracking branch 'upstream/7.2' into 7.2-daterangeaggregation-fix
pmishev
committed