[TRT RTX EP] Add unit test for EPContext model having the correct node without optional node output#26139

chilo-ms wants to merge 2 commits intomainmicrosoft/onnxruntime:mainfrom

chi/fix_get_subgraph_for_trt_unit_testmicrosoft/onnxruntime:chi/fix_get_subgraph_for_trt_unit_testCopy head branch name to clipboard