…erification (#2302)

* Fix diagnostics, support date-like in freshness

* Push the fix towards cloud, not internals

* Fix annotation

* Fix freshness if no data, hanlde corner cases better

* no data->fail check

* Fix test

#2314)

* Floor the current freshness in seconds so it returns an `int`, I think this makes the most sense given the unit. This also matches what Soda Cloud is expecting.

Adjusted tests accordingly.

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Allow data_timestamp to be passed in the Python API

Added default check names.

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