* [MM-53428] Delete empty drafts on upsert
* Add migrations to fix existing drafts
* Fix CI
* Delete empty drafts entirely from the DB
* Fix lint
* Implement batch migration for deleting drafts
* Missing store layers
* Add updated mock
* Remove unnecessary test
* PR feedback
* Add check for cluster migration
* Fix MySQL
* Don't check for len<2
* Bit of PR feedback
* Use query builder for parameters
* PR feedback
* More PR feedback
* Merge'd
* unit test GetLastCreateAtAndUserIdValuesForEmptyDraftsMigration
* simplified builder interface
* fix DeleteEmptyDraftsByCreateAtAndUserId for MySQL
* rework as batch migration worker
* fix typo
* log ip address on version mismatches too
* simplify reset semantics
* remove trace log in favour of low spam
* document parameters for clarity
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Co-authored-by: Mattermost Build <build@mattermost.com>
Co-authored-by: Jesse Hallam <jesse.hallam@gmail.com>
