fix ReduceMean call

src/data/Tensor.cpp

@@ -125,7 +125,7 @@ Aidge::Tensor Aidge::Tensor::mean() const {
     // No need to specify the list of all axes!
     std::vector<std::int32_t> axes(nbDims());
     std::iota(std::begin(axes), std::end(axes), 0);
-    auto mean_ = ReduceMean_Op(axes, 0);
+    auto mean_ = ReduceMean_Op(axes, false, false);
     mean_.associateInput(0, std::make_shared<Tensor>(*this));
     mean_.setDataType(dataType());
     mean_.setDataFormat(dataFormat());