Fix layout transformer for FusedConv (#24169)

### Description

Fix layout transformer for FusedConv.

The current layout transformer will transform `FusedConv` (kMSDomain)
into `FusedConv` (kMSInternalNHWCDomain) if the EP wants channels_last.

However, kMSInternalNHWCDomain uses OpType `Conv` for both Conv and
FusedConv, so `FusedConv` (kMSInternalNHWCDomain) is invalid
(unregistered op).

This PR fixes this and allows layout transformer change `FusedConv`
(kMSDomain) into `Conv` (kMSInternalNHWCDomain).

### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->

Author: fs-eire

onnxruntime/core/optimizer/layout_transformation/layout_transformation.cc

@@ -145,10 +145,14 @@ Status TransformLayoutForEP(Graph& graph, bool& modified, const IExecutionProvid
     }
 
     if (ConvertNodeLayout(*node)) {
+      // domain kMSInternalNHWCDomain uses OpType "Conv" for both Conv and FusedConv.
+      // So, change the OpType to "Conv" for FusedConv.
+      std::string_view op_type = node->OpType() == "FusedConv" ? "Conv" : node->OpType();
+
       // if already transformed then change the domain to kMSInternalNHWCDomain this way the EP
       // knows this op is in the expected format.
       if (node->GetAttributeIntDefault("channels_last", 0) == 1) {
-        SwapNodeOpTypeAndDomain(*api_graph, *node, node->OpType(), kMSInternalNHWCDomain);
+        SwapNodeOpTypeAndDomain(*api_graph, *node, op_type, kMSInternalNHWCDomain);
         // Changing the domain for the node requires creating a new node and replacing the old one
         // therefore set the modified flag.
         modified = true;
@@ -175,7 +179,7 @@ Status TransformLayoutForEP(Graph& graph, bool& modified, const IExecutionProvid
       // Except for resize and convolution ops, all the other layout sensitive ops only require layout transformation
       // for 0th input and output. For resize, add the other relevant inputs which need conversion. For Conv - layout
       // transformer only converts layout for 0th input, weights should be handled by every EP.
-      if (node->OpType() == "Resize") {
+      if (op_type == "Resize") {
         // Older versions of resize have a bug where ROI and Scales cannot be made empty inputs. To handle this case,
         // we need to jump a few extra hoops to make sure its inputs are correctly handled.
         //
@@ -205,7 +209,7 @@ Status TransformLayoutForEP(Graph& graph, bool& modified, const IExecutionProvid
         WrapTransposesAroundNode(*api_graph, *node, {&input_perm}, {&output_perm});
       }
 
-      SwapNodeOpTypeAndDomain(*api_graph, *node, node->OpType(), kMSInternalNHWCDomain);
+      SwapNodeOpTypeAndDomain(*api_graph, *node, op_type, kMSInternalNHWCDomain);
       modified = true;
     }
   }