Update @typespec/http-client-csharp to 1.0.0-alpha.20250905.1

- Updated @typespec/http-client-csharp from 1.0.0-alpha.20250903.1 to 1.0.0-alpha.20250905.1
- Updated Microsoft.TypeSpec.Generator.ClientModel from 1.0.0-alpha.20250903.1 to 1.0.0-alpha.20250905.1
- Regenerated OpenAI SDK code with new generator version
- Updated centrally managed package-lock.json file with new dependency versions

Author: actions-user

codegen/generator/src/OpenAI.Library.Plugin.csproj

@@ -8,7 +8,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="Microsoft.TypeSpec.Generator.ClientModel" Version="1.0.0-alpha.20250903.1" />
+      <PackageReference Include="Microsoft.TypeSpec.Generator.ClientModel" Version="1.0.0-alpha.20250905.1" />
     </ItemGroup>
 
   <!-- Copy output to package dist path for local execution and  -->
@@ -23,3 +23,4 @@
 
 </Project>
 
+

codegen/package.json

@@ -31,7 +31,7 @@
     "@open-ai/plugin": "file:",
     "@azure-tools/typespec-client-generator-core": "0.59.0",
     "@azure-tools/typespec-azure-core": "0.59.0",
-    "@typespec/http-client-csharp": "1.0.0-alpha.20250903.1",
+    "@typespec/http-client-csharp": "1.0.0-alpha.20250905.1",
     "@typespec/http": "1.3.0",
     "@typespec/openapi": "1.3.0"
   },