fix: Add deployment issue guidance to POSIX hook

[KanchanN-Microsoft]

Purpose

This pull request adds a new informational message to the deployment process for POSIX systems in the azure.yaml configuration. The message guides users to open an issue with deployment logs if they encounter problems.

Deployment process improvement:

• Added a POSIX-specific deployment message in azure.yaml to instruct users to open an issue with deployment logs if deployment fails or issues arise.

Does this introduce a breaking change?

• Yes
• No

Golden Path Validation

• I have tested the primary workflows (the "golden path") to ensure they function correctly without errors.

Deployment Validation

• I have validated the deployment process successfully and all services are running as expected with this change.

What to Check

Verify that the following are valid

• ...

Other Information

[Copilot]

Pull request overview

This PR updates the repository’s azure.yaml hook messaging to provide POSIX users with guidance on what to do if deployment encounters issues (open a GitHub issue and include deployment logs), aligning with existing Windows guidance.

Changes:

• Added a POSIX (sh) preprovision hook that prints an informational “open an issue with logs” message and link.
• Kept hook execution interactive for POSIX to match the existing Windows hook behavior.

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