Resolve principalId inside diagnostic module to avoid cross-scope reference error

[bluebasher]

Summary & Motivation

Resolve principalId inside the diagnostics module to eliminate the cross-scope reference() error during deployment.
This fixes this cloud infrastructure error.

• Remove the principalId parameter from the diagnostics module interface.
• Retrieve the principalId internally within the module, ensuring all references stay within the same scope.
• Update calling templates to reflect the revised module signature.

Checklist

• I have added tests, or done manual regression tests
• I have updated the documentation, if necessary