Use transaction callbacks for Vulnerabilities ES bookkeeping

What does this MR do and why?

Vulnerabilities::BulkEsOperationService was being called inside DB transactions. But this service calls redis, which is not recommended inside of a db transaction. This MR uses the transaction callbacks to handle this so that such calls are made after transaction commit. This callback mechanism was patched in !194319 (merged)

Changes -

1. Any instance where BulkEsOperationService was being called inside a transaction is now replaced with the same but inside of an after_commit transaction callback.
2. Any instance where BulkEsOperationService was being called in an security ingestion task is now replaced with the same but inside of an after_commit transaction callback, since security ingestion tasks run under a transaction. See note !193908 (comment 2556376394)

References

#549584 (closed)

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