added APP_env variable in bicep

Author: Priyanka-Microsoft

infra/main.bicep

@@ -1738,3 +1738,4 @@ output AZURE_AI_MODEL_DEPLOYMENT_NAME string = aiFoundryAiServicesModelDeploymen
 // output APPLICATIONINSIGHTS_CONNECTION_STRING string = applicationInsights.outputs.connectionString
 output AZURE_AI_AGENT_MODEL_DEPLOYMENT_NAME string = aiFoundryAiServicesModelDeployment.name
 output AZURE_AI_AGENT_ENDPOINT string = aiFoundryAiServices.outputs.aiProjectInfo.apiEndpoint
+output APP_ENV string = 'Prod'