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Build: 7.0.0-1345

This issue to track the behaviour of the eventing transaction.

When we create 1 doc in source bucket using transaction it create 3 documents in source bucket.
- _txn:atr (1 for each vbucket)
- _txn:client-record
- Actual document (create 2 times. Initial empty document and then data after the commit)
These records update multiple time. Hence eventing received multiple mutations.
We end up seeing 9 mutations for 1 doc via transaction.

Expected: Eventing should not receive mutation for empty document created. DCP need to suppress extra mutation

depends on

MB-37374 Implement support so Transactions do not need to create visible temporary docs

duplicates

MB-44763 ACID Transactions trigger eventing function before commit

MB-43704 ACID Transactions mutations get sent to Indexer before commit

MB-39942 ACID Transactions trigger eventing function before commit: _txn docs

Duplicate mutation for eventing when data loading is through transaction