fix(doctrine): memory leak when using the iterator mongodb

[soyuka]

No description provided.

[GromNaN]

You can forget it.

Suggested change

	public function __construct(private readonly Iterator $mongoDbOdmIterator, private readonly UnitOfWork $unitOfWork, private readonly string $resourceClass, private readonly array $pipeline)
	public function __construct(Iterator $mongoDbOdmIterator, private readonly UnitOfWork $unitOfWork, private readonly string $resourceClass, private readonly array $pipeline)

[soyuka]

Should've been fixed by doctrine/mongodb-odm#2709 ?

[GromNaN]

I think this is still a relevant change. It frees up the cursor and its stacked iterators, from the memory, to keep only the results as an array, before starting another memory-consuming job: hydration.

[GromNaN]

This PR can be closed, as #6912 did the same.