fix: added the exp foundry project variables

[Dhruvkumar-Microsoft]

Purpose

This pull request updates the way Azure AI service environment variables are set in the container app modules, switching from using built-in Bicep functions to referencing parameter values. This change improves flexibility and makes it easier to configure the target subscription and resource group for AI services.

Environment variable configuration updates:

• In infra/main.bicep, the AZURE_AI_SUBSCRIPTION_ID and AZURE_AI_RESOURCE_GROUP environment variables are now set using the aiFoundryAiServicesSubscriptionId and aiFoundryAiServicesResourceGroupName parameters, respectively, instead of the built-in subscription().subscriptionId and resourceGroup().name functions.
• The same updates are made in infra/main_custom.bicep, ensuring consistent configuration for custom deployments.

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

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