IdentityBuilder should add Delimit for each input (#14592)
…("####") should append for each input_def, not only on the last one
else branch of this if should return ignore_identity
https://github.com/microsoft/onnxruntime/blob/3d7518762ace6929be98e1203174c2dbf1ac094e/onnxruntime/core/optimizer/identical_children_consolidation.cc#L66
identity.append("####") should append for each input_def, not only on
the last one
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