fix: Remove createdby from pipeline and change logic for createdby tag in …

[NirajC-Microsoft]

Purpose

This pull request makes minor adjustments to deployment configuration and infrastructure parameter handling, mainly improving robustness in how user information is captured during deployments.

Infrastructure parameter handling:

• Updated the createdBy parameter in infra/main.bicep to fall back to deployer().objectId if userPrincipalName is not present, making the logic more robust for different deployment scenarios.

Deployment configuration:

• Removed the tags parameter from the deployment command in .github/workflows/deploy.yml, possibly to simplify or centralize tag management.
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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