[CoR] ENTRA_CLIENT_ID is deployed as a zero-value placeholder causing Tasks API authentication failure

OS: Win11 x64
Build Version: 0.12.8-alpha.0
VS Code Version: Version: 1.137.0

Repro Steps:

1. Create and deploy a CoR project using the following prompt:
   a to-do list web app with a REST API, PostgreSQL database, Microsoft Entra authentication, and Azure deployment
2. Complete the workflow and deploy the application to Azure.
3. Open the deployed application.

Expect:
A valid Microsoft Entra client ID should be configured during deployment so the deployed application can authenticate successfully and access the Tasks API.

Actual:
The application loads, but the Tasks page shows:

Tasks could not be refreshed 
Microsoft Entra configuration is missing

More Info:

1. The generated Container App is configured with: ENTRA_CLIENT_ID=00000000-0000-0000-0000-000000000000
2. Backend logs show:

GET /api/tasks
401 Unauthorized

3. The deployment itself succeeds and the backend health endpoint reports healthy:

GET /api/health
200 OK

However, the application is not functional because requests to the protected Tasks API return 401 Unauthorized.

Start at the deployment configuration that creates the Container App and sets ENTRA_CLIENT_ID; the issue does not name a source file or test. Compare that value with the generated application's authentication configuration, then redeploy and verify that GET /api/tasks no longer returns 401 while GET /api/health remains healthy.