[CoR] Deployment does not start after deployment artifacts are successfully validated

[v-ruizh]

OS: Win11 x64
VS Code Insider: 1.132.0-insider
Build Version: 0.12.8-alpha.0

Repro Steps:

1. Create an Azure Project.
2. Complete Project Creation and Local Development stages.
3. Generate and approve the deployment plan.
4. Wait for deployment artifacts to be generated and validated.
5. Observe the deployment workflow status.

Expect:
After deployment artifacts are successfully generated and validated, the workflow should automatically proceed to the Azure deployment phase and continue executing deployment steps.

Actual:
The deployment plan reaches the "Validated" state and deployment artifacts are successfully generated, but the workflow does not continue to the Azure deployment phase.

More Info:

1. This issue is intermittent and does not reproduce consistently.
2. After deployment artifacts are successfully generated and validated, the workflow may stop at "Begin Azure deployment phase" and does not automatically proceed to the next deployment step.

[motm32]

I am not sure if there is much we can do to fix this since it is part of the GHC4A skill. I made changes to the wording of the deployment agent in this PR so hopefully it helps to fix this issue: #1627