refactor: prompt user for azure cli authentication while running post deployment script

[Harsh-Microsoft]

Purpose

This pull request makes a minor update to the Azure authentication logic in the infra/scripts/process_sample_data.sh script. The main change is that the script now always attempts to authenticate with Azure, removing the conditional check for an existing authentication session.

• Authentication flow simplification:
  • The script no longer checks if the user is already authenticated with Azure before attempting to authenticate, ensuring a consistent authentication attempt every run. [1] [2]

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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