Add processed extra directory for sxt #3666

Job	Run time
Static Analysis	8s
Build package	11s
Build package	8s
Call ci unit tests workflow / Run tests (3.12)	3m 10s
Call ci unit tests workflow / Run tests (3.11)	2m 44s
Call ci unit tests workflow / Run tests (3.10)	3m 5s
	9m 26s

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