Update UnbrandedGeneratorVersion to 1.0.0-alpha.20251017.1 (Azure#53329)

Co-authored-by: Ubuntu <cloudtest@0999b934c000003.tkkhlgj2u51eln3mcb0lygmbye.dx.internal.cloudapp.net>

Author: azure-sdk

eng/Packages.Data.props

@@ -469,7 +469,7 @@
 
   <PropertyGroup>
     <TestProxyVersion>1.0.0-dev.20250930.1</TestProxyVersion>
-    <UnbrandedGeneratorVersion>1.0.0-alpha.20251016.1</UnbrandedGeneratorVersion>
+    <UnbrandedGeneratorVersion>1.0.0-alpha.20251017.1</UnbrandedGeneratorVersion>
     <AzureGeneratorVersion>1.0.0-alpha.20250929.3</AzureGeneratorVersion>
   </PropertyGroup>
 </Project>

eng/http-client-csharp-emitter-package-lock.json

@@ -2,7 +2,7 @@
   "main": "dist/src/index.js",
   "dependencies": {
     "client-plugin": "file:../../../../eng/packages/plugins/client",
-    "@typespec/http-client-csharp": "1.0.0-alpha.20251016.1"
+    "@typespec/http-client-csharp": "1.0.0-alpha.20251017.1"
   },
   "devDependencies": {
     "@azure-tools/typespec-client-generator-core": "0.61.0",

eng/http-client-csharp-emitter-package.json

@@ -4682,6 +4682,7 @@
                 "namespace": "BasicTypeSpec",
                 "isFixed": false,
                 "isFlags": false,
+                "usage": "None",
                 "decorators": []
               },
               "location": "Body",
@@ -4734,6 +4735,7 @@
                 "namespace": "BasicTypeSpec",
                 "isFixed": false,
                 "isFlags": false,
+                "usage": "None",
                 "decorators": []
               },
               "location": "Body",
@@ -4786,6 +4788,7 @@
                 "namespace": "BasicTypeSpec",
                 "isFixed": false,
                 "isFlags": false,
+                "usage": "None",
                 "decorators": []
               },
               "location": "Body",

eng/packages/http-client-csharp/generator/TestProjects/Local/Basic-TypeSpec/tspCodeModel.json

@@ -38,7 +38,7 @@
     "dist/generator/**"
   ],
   "dependencies": {
-    "@typespec/http-client-csharp": "1.0.0-alpha.20251016.1"
+    "@typespec/http-client-csharp": "1.0.0-alpha.20251017.1"
   },
   "devDependencies": {
     "@azure-tools/azure-http-specs": "0.1.0-alpha.30",