fix identity_op dimension management

include/aidge/operator/Identity.hpp

@@ -27,6 +27,8 @@
 
 namespace Aidge {
 
+
+
 /**
  * @brief Indentity_Op is an helper operator made to ease the declaration of MetaNodes.
  * This Operator has no Implementation, it just forward its input Tensor.
@@ -63,7 +65,7 @@ public:
         return std::make_shared<Identity_Op>(*this);
     }
 
-    bool forwardDims(bool /*allowDataDependency*/ = false) override final { return true; } // Do nothing
+    // bool forwardDims(bool /*allowDataDependency*/ = false) override final { return true; } // Do nothing
 
     /**
      * @brief Check if output dimensions have been computed.
@@ -74,7 +76,7 @@ public:
      * @return false Input has no dimensions or is a nullptr.
      */
     bool dimsForwarded() const override final {
-        return mInputs[0] ? !mInputs[0]->empty() : false;
+        return mInputs[0] ? (mInputs[0]->empty() ? false : mInputs[0]->dims() == mOutputs[0]->dims()) : false;
     }