fix: Fixed issues related to intermittent WAF deployment failures

[Prajwal-Microsoft]

Purpose

• This pull request refactors how private endpoints are provisioned for AI services in the infra/main.bicep file. Instead of passing private endpoint configuration directly to the cognitive services modules, it now creates separate private-endpoint modules for both AI Services and Content Understanding accounts. This approach improves modularity and clarity in the infrastructure code.

Private Endpoint Provisioning Refactor:

• Introduced new private-endpoint modules (cognitiveServicePrivateEndpoint and contentUnderstandingPrivateEndpoint) to manage private endpoint creation for AI Services and Content Understanding accounts, respectively, instead of configuring them inline within the cognitive services modules. [1] [2]
• The new modules set up the required private link service connections, DNS zone groups, and subnet associations using outputs from the virtual network and cognitive services modules. [1] [2]

These changes make the infrastructure codebase more maintainable and align with best practices for modular ARM/Bicep deployments.

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

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Other Information

[github-actions]

🎉 This PR is included in version 1.11.5 🎉

The release is available on GitHub release

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