Refactor props and targets of Microsoft.ML.OnnxRuntime and DllImport#27351

tianleiwu wants to merge 4 commits intomainmicrosoft/onnxruntime:mainfrom

tlwu/20260212/ort_nuget_props_linux_macos_v2microsoft/onnxruntime:tlwu/20260212/ort_nuget_props_linux_macos_v2Copy head branch name to clipboard