Set sharding keys for feature category importers tables

What does this MR do and why?

Related to #463854 (closed)

Note: bulk_import_entities has been extracted to its own issue: #482670 (closed)

Sharding keys need to be set for the tables:

• bulk_import_batch_trackers
• bulk_import_configurations
• bulk_import_export_batches
• bulk_import_export_uploads
• bulk_import_failures
• bulk_import_trackers
• import_export_uploads
• import_failures
• project_import_data

For some tables we've had to first remove some old data before we could create the not null constraints. These were old records which aren't needed anymore. More info here: #463854 (comment 2099946570)

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