Failing tests in aidge_learning due to changes in aidge_core

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What commit version of aidge do you use

• aidge_core: dev
• aidge_backend_cpu: dev
• aidge_learning: dev

Problem description

./setup.sh -m core -m backend_cpu && ./setup.sh -m learning -t 

results in

86% tests passed, 1 tests failed out of 7

Total Test time (real) =   0.54 sec

The following tests FAILED:
          4 - [loss/regression] MSE (Failed)
Errors while running CTest

instead of tests succeeding.

Also, all of the tests for snns (that are in branch leaky-backward in aidge_learning, since we need core,cpu and learning) are failing with an error in getImpl().

Is this a regression ?

Yes it is.

It seems like the responsible is 772300d6, since using setDataType fixes everything.