Update azure-typespec/http-client-csharp-mgmt version to prerelease 1.0.0-alpha.20251208.1 (#54399)

* Regenerate repository SDK with TypeSpec build 20251208.1

* Update SDK code co_dy_1

* Update SDK code ea_mo_2

* Update SDK code mo_re_3

* Update SDK code ag_co_0

* Update SDK code sc_wo_4

* fix custom code for generation failure

* fix custom code for generation failure

* fix custom code and export API

---------

Co-authored-by: Wei Hu <[email protected]>
Co-authored-by: Wei Hu <[email protected]>

Author: azure-sdk

eng/azure-typespec-http-client-csharp-mgmt-emitter-package-lock.json

@@ -1,7 +1,7 @@
 {
   "main": "dist/src/index.js",
   "dependencies": {
-    "@azure-typespec/http-client-csharp-mgmt": "1.0.0-alpha.20251205.1"
+    "@azure-typespec/http-client-csharp-mgmt": "1.0.0-alpha.20251208.1"
   },
   "devDependencies": {
     "@azure-tools/typespec-autorest": "0.62.0",