onnxruntime

fix more dml warnings (#21980)

### Description
Fixes more warnings in DML execution provider that lead to security
issues in binskim


### Motivation and Context
OS components that include ORT must treat certain warnings as errors,
and cannot disable critical compiler warnings

https://github.com/microsoft/binskim/blob/main/src/BinSkim.Rules/PERules/BA2007.EnableCriticalCompilerWarnings.cs