[circle2circle] Check file size > 2G with unet

[seanshpark]

Logs of issues with our 4G unet internal model.

This model is converted from ONNX.

• part of [compiler] Support large models #12732

tasks

• resolve model conversion with internal one-import-onnx-ext tool
• ...

[seanshpark]

Reshape Op shape with value of [0, 32, -1]

• 0 can be treated as 1 --> this is incorrect

from https://onnx.ai/onnx/operators/onnx__Reshape.html#reshape-19

• I'm not sure accepting opset-19 as of now is OK or not
• but anyway, we have a model with opset-17(?) having 0 in shape ... this is weird

what to do

• copy dimension value from input
• but may have to preserve as 0 when there is any issue with this
• but need to sync with our Backends