.Net: Update azure.ai.openai to beta 13 (#4861)

### Motivation and Context

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### Description

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### Contribution Checklist

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- [ ] The code builds clean without any errors or warnings
- [ ] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [ ] All unit tests pass, and I have added new tests where possible
- [ ] I didn't break anyone 😄

dotnet/Directory.Packages.props

@@ -5,7 +5,7 @@
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
   <ItemGroup>
-    <PackageVersion Include="Azure.AI.OpenAI" Version="1.0.0-beta.12" />
+    <PackageVersion Include="Azure.AI.OpenAI" Version="1.0.0-beta.13" />
     <PackageVersion Include="Azure.Identity" Version="1.10.4" />
     <PackageVersion Include="Azure.Monitor.OpenTelemetry.Exporter" Version="1.2.0" />
     <PackageVersion Include="Azure.Search.Documents" Version="11.5.1" />

dotnet/src/Connectors/Connectors.OpenAI/AzureSdk/ClientCore.cs

@@ -914,7 +914,7 @@ private static ChatRequestMessage GetRequestMessage(ChatMessageContent message)
                             name.ValueKind == JsonValueKind.String &&
                             arguments.ValueKind == JsonValueKind.String)
                         {
-                            ftcs.Add(OpenAIFunctionToolCall.CreateChatCompletionsFunctionToolCall(id.GetString()!, name.GetString()!, arguments.GetString()!));
+                            ftcs.Add(new ChatCompletionsFunctionToolCall(id.GetString()!, name.GetString()!, arguments.GetString()!));
                         }
                     }
                     tools = ftcs;

dotnet/src/Connectors/Connectors.OpenAI/AzureSdk/OpenAIFunctionToolCall.cs

@@ -3,7 +3,6 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
-using System.Reflection;
 using System.Text;
 using System.Text.Json;
 using Azure.AI.OpenAI;
@@ -159,7 +158,7 @@ internal static ChatCompletionsFunctionToolCall[] ConvertToolCallUpdatesToChatCo
                 functionNamesByIndex?.TryGetValue(toolCallIndexAndId.Key, out functionName);
                 functionArgumentBuildersByIndex?.TryGetValue(toolCallIndexAndId.Key, out functionArguments);
 
-                toolCalls[i] = CreateChatCompletionsFunctionToolCall(toolCallIndexAndId.Value, functionName ?? string.Empty, functionArguments?.ToString() ?? string.Empty);
+                toolCalls[i] = new ChatCompletionsFunctionToolCall(toolCallIndexAndId.Value, functionName ?? string.Empty, functionArguments?.ToString() ?? string.Empty);
                 i++;
             }
 
@@ -168,13 +167,4 @@ internal static ChatCompletionsFunctionToolCall[] ConvertToolCallUpdatesToChatCo
 
         return toolCalls;
     }
-
-    // TODO: Remove this temporary hack once the Azure SDK has been updated to set `base.Type = "function"` in the ChatCompletionsFunctionToolCall ctor
-    internal static ChatCompletionsFunctionToolCall CreateChatCompletionsFunctionToolCall(string id, string name, string arguments)
-    {
-        var c = new ChatCompletionsFunctionToolCall(id, name, arguments);
-        s_type?.SetValue(c, "function");
-        return c;
-    }
-    private static readonly PropertyInfo? s_type = typeof(ChatCompletionsToolCall).GetProperty("Type", BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
 }