[DML EP] ORT would crash after deleting one of the models and then do…

…ing an inference (#2)

Same as microsoft#22948


![image](https://github.com/user-attachments/assets/a6d1fbee-2e83-41b6-a602-998bbbd98e00)

onnxruntime/core/providers/dml/DmlExecutionProvider/src/ExecutionProvider.cpp

@@ -444,6 +444,12 @@ namespace Dml
     {
         ORT_TRY
         {
+
+        if (m_allocator)
+        {
+            m_context->SetAllocator(m_allocator);
+        }
+
         assert(!m_closed);
 
         DML_BINDING_DESC persistentResourceBindingDesc =