onnxruntime

fcfc2391 - [JSEP] allow JsCustomAllocator to deal with zero sized input (#17660)

[JSEP] allow JsCustomAllocator to deal with zero sized input (#17660) ### Description allow JsCustomAllocator to deal with zero sized input. This is a standalone fix for zero-sized tensor handling for JsCustomAllocator. There are other components in JSEP not supporting zero-sized tensors need to be fixed.