[ONNX] Fix Gather replacement in RNN peephole (#93120)
From PR: https://github.com/pytorch/pytorch/pull/58691, Replacing the second input of `Gather` 0 to 1 affects other innocent Nodes. In Issue #91526 onnx::range starts from 0, the 0 is changed by this mechanism, as it's shared with onnx::Gather. This PR intends to create a whole independent Constant 0 for replacement. NOTE: The PR passes all existing RNN tests locally in case CI doesn't include RNN test.
~~TODO: test~~
Pull Request resolved: https://github.com/pytorch/pytorch/pull/93120
Approved by: https://github.com/BowenBao
