Bug fix for nested control flow ops for TRT EP (#16343)
Current TRT EP can support model which has nested control flow ops
(multiple level subgraphs). But it fails at a case where the subgraph
has outer scope value that is defined several levels up in the top-level
graph, in this case, the outer scope value is the input of the top-level
graph. The outer scope values are not properly handled during TRT EP's
subgraph reconstruction stage and fails at `graph.resolve()`.
The way ORT gets capability from EPs is a bottom-up approach meaning
inner most subgraph gets handled first. TRT EP reconstructs each
subgraph level by level and following modifications are made to fix the
outer scope values issue:
- `SetGraphOuterScopeValuesAndInputs()` and `SetAllGraphInputs()` are
added to handle outer scope values and add those values as graph inputs
if needed in order to make `graph.resolve()` happy.
- Change to use `GetNodeArgIncludingParentGraphs` so that when creating
the fused TRT node for some subgraphs in`
Graph::CreateFusedSubGraphNode()`, it can get the NodeArgs for outer
scope values from top-level graph.
This PR fixes https://github.com/microsoft/onnxruntime/issues/16217
