onnxruntime

7a123714 - adjusts conv kernel to use get/set by offset helpers (#29463)

adjusts conv kernel to use get/set by offset helpers (#29463) ### Description <!-- Describe your changes. --> Prevents buffer overflow for conv node when input images are too large ### Motivation and Context <!-- - Why is this change required? What problem does it solve? - If it fixes an open issue, please link to the issue here. --> Fixes https://github.com/microsoft/onnxruntime/issues/29130 The ReduceMean hypothesis in the issue was wrong and this addresses the actual root cause --------- Co-authored-by: Prathik Rao <prathikrao@microsoft.com>