Tech Debt | Importing CSV might have performance issue when persisting entities on database.

[Joao-vi]

Describe the bug
After fix bug related to import csv #7525 I've gathered some performance measurements to see impacts from this new fix when persisting on database.

I'm importing just one Entity and increasing numbers of languages installed on the instance.

// entities.saveMultiple (This is the reference, with relationship bug)
Entities Languages: 2 | Time: 50 milliseconds
Entities Languages: 4 | Time: 66 milliseconds
Entities Languages: 6 | Time: 104 milliseconds

// entities.save (Parallel save, with entity conflicts)
Entities Languages: 2 | Time: 235 milliseconds
Entities Languages: 4 | Time: 639 milliseconds
Entities Languages: 6 | Time: 925 milliseconds

// entities.save (Sequential save, without entity conflicts)
Entities Languages: 2 | Time: 463 milliseconds
Entities Languages: 4 | Time: 787 milliseconds
Entities Languages: 6 | Time: 1245 milliseconds

The api entities.saveMultiple, previous used to persist translated versions of the Entities was not applying relationship type correctly on translated version of the entities and therefore persisting metadata properties without the values from the parent relationship.