Enable VS support for GPT-5.3-Codex (#59832)

Author: brian-d-ellis

data/tables/copilot/model-supported-clients.yml

@@ -168,7 +168,7 @@
 - name: GPT-5.3-Codex
   dotcom: true
   vscode: true
-  vs: false
+  vs: true
   eclipse: false
   xcode: false
   jetbrains: false