quick modification to new sofa matrix assembly - non fonctionnal yet #112

Job	Run time
Run on ubuntu-20.04 with SOFA master	5m 42s
Run on windows-2019 with SOFA master	15m 24s
Run on macos-11 with SOFA master	3h 39m 14s
Deploy artifacts	2m 10s
	4h 2m 30s

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