Bump version of MGC (Azure#46565)

* Bump version of MGC

* add dependencies

* update lock file

* fix dependencies

* update test

* remove additional namespace

* specify peer dependencies

Author: live1206

eng/Packages.Data.props

@@ -243,7 +243,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(IsGeneratorLibrary)' == 'true'">
-    <PackageReference Update="Microsoft.Generator.CSharp.ClientModel" Version="1.0.0-alpha.20240913.1" />
+    <PackageReference Update="Microsoft.Generator.CSharp.ClientModel" Version="1.0.0-alpha.20241010.1" />
   </ItemGroup>
 
   <!--

eng/packages/http-client-csharp/generator/Azure.Generator/src/AzureClientPlugin.cs

@@ -37,6 +37,7 @@ public AzureClientPlugin(GeneratorContext context) : base(context)
     /// </summary>
     public override void Configure()
     {
+        base.Configure();
     }
 
     /// <summary>

eng/packages/http-client-csharp/generator/Azure.Generator/test/Common/InputFactory.cs

@@ -150,8 +150,7 @@ public static InputModelProperty Property(
                 type,
                 isRequired,
                 isReadOnly,
-                isDiscriminator,
-                null);
+                isDiscriminator);
         }
 
         public static InputModelType Model(