Skip MRWContext generation if MRW is not enabled (#5372)

Author: live1206

samples/AppConfiguration/Generated/Models/AppConfigurationContext.cs

@@ -88,10 +88,13 @@ public static void Execute(GeneratedCodeWorkspace project, InputNamespace inputN
                 project.AddGeneratedFile($"{operation.Type.Name}.cs", codeWriter.ToString());
             }
 
-            var contextWriter = new CodeWriter();
-            var contextWriterInstance = new ModelReaderWriterContextWriter();
-            contextWriterInstance.Write(contextWriter, library.Models);
-            project.AddGeneratedFile($"Models/{ModelReaderWriterContextWriter.Name}.cs", contextWriter.ToString());
+            if (Configuration.UseModelReaderWriter)
+            {
+                var contextWriter = new CodeWriter();
+                var contextWriterInstance = new ModelReaderWriterContextWriter();
+                contextWriterInstance.Write(contextWriter, library.Models);
+                project.AddGeneratedFile($"Models/{ModelReaderWriterContextWriter.Name}.cs", contextWriter.ToString());
+            }
         }
     }
 }

samples/Azure.AI.FormRecognizer/Generated/Models/AzureAIFormRecognizerContext.cs

@@ -106,10 +106,14 @@ public static async Task ExecuteAsync(GeneratedCodeWorkspace project, InputNames
                 project.AddGeneratedFile($"Internal/{helper.Type.Name}.cs", helperWriter.ToString());
             }
 
-            var contextWriter = new CodeWriter();
-            var contextWriterInstance = new ModelReaderWriterContextWriter();
-            contextWriterInstance.Write(contextWriter, library.AllModels);
-            project.AddGeneratedFile($"Models/{ModelReaderWriterContextWriter.Name}.cs", contextWriter.ToString());
+            if (Configuration.UseModelReaderWriter)
+            {
+                var contextWriter = new CodeWriter();
+                var contextWriterInstance = new ModelReaderWriterContextWriter();
+                contextWriterInstance.Write(contextWriter, library.AllModels);
+                project.AddGeneratedFile($"Models/{ModelReaderWriterContextWriter.Name}.cs", contextWriter.ToString());
+            }
+
 
             IEnumerable<string> modelsToKeep = [.. library.AccessOverriddenModels, ModelReaderWriterContextWriter.Name];
             await project.PostProcessAsync(new PostProcessor(