#22890 Fix profiling on empty Optional

[amancini-N]

Description

Fix sequential_executor.cc to avoid segfault when profiling is used on model with empty Optional

Motivation and Context

Fixes #22890

[amancini-N]

@amarin16 just a double check if I need to do anything before getting this merged, thx!

[amarin16]

I believe that the only thing remaining is to have all the pipelines pass

[amarin16]

/azp run Linux CPU CI Pipeline, Linux CPU Minimal Build E2E CI Pipeline, Linux GPU CI Pipeline, Linux GPU TensorRT CI Pipeline, Linux OpenVINO CI Pipeline, MacOS CI Pipeline, ONNX Runtime Web CI Pipeline, onnxruntime-binary-size-checks-ci-pipeline, Linux QNN CI Pipeline

[azure-pipelines]

Azure Pipelines successfully started running 9 pipeline(s).

[amarin16]

/azp run Windows CPU CI Pipeline, Windows GPU CI Pipeline, Windows GPU TensorRT CI Pipeline, Windows ARM64 QNN CI Pipeline, orttraining-linux-ci-pipeline, orttraining-linux-gpu-ci-pipeline, orttraining-ortmodule-distributed, Windows x64 QNN CI Pipeline, Linux MIGraphX CI Pipeline, Big Models

[azure-pipelines]

Azure Pipelines successfully started running 6 pipeline(s).

[amarin16]

/azp run ONNX Runtime React Native CI Pipeline, orttraining-amd-gpu-ci-pipeline, Linux Android Emulator QNN CI Pipeline, Windows GPU CUDA CI Pipeline, Windows GPU DML CI Pipeline, Windows GPU Doc Gen CI Pipeline

[azure-pipelines]

Azure Pipelines successfully started running 5 pipeline(s).