test:update case owner (#15079)

Author: alisa-1020

packages/tests/vscuse/vscode-test-cases/plans/Feature_Check_DA_New_Env_AgentScope.json

@@ -14,7 +14,7 @@
     "name": "Feature Check DA New Env AgentScope",
     "description": {
       "other": "to check new environment has new env Agent_Scope",
-      "owner": "v-liliu2",
+      "owner": "v-liliu2@microsoft.com",
       "workitem": "36275378"
     },
     "generated_at": "2025-12-30T06:00:00.143637",