fix: Dev to macae-v2 branch

[NirajC-Microsoft]

Purpose

This pull request updates the logic for setting the createdBy tag in the infra/main.bicep file. The main improvement is to make the assignment of the createdBy parameter more robust by handling cases where userPrincipalName may not be present in the deployer object.

Tag assignment improvement:

• Updated the createdBy parameter to check if userPrincipalName exists in the deployer() object. If it does, it uses the username portion before the @; otherwise, it falls back to using the objectId of the deployer. This ensures the tag is always set with meaningful information, even if the user principal name is missing.
• ...

Does this introduce a breaking change?

• Yes
• No

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid

• ...

Other Information