BulkImports::Entity db records have `jid` missing
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When using ~"Importer:GitLab Migration" we create `BulkImports::Entity` records to keep track of import state of individual project/group migrations from source GitLab Instance to destination. This work is done in `BulkImports::EntityWorker` (which enqueues a number of `BulkImports::PipelineWorker`).
I noticed `BulkImports::Entity` db records do not have associated Sidekiq jod id `jid` stored. We should fix that, since it's helpful to have job ids present during debugging.
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