* Added null checks when getting customer metadata
* Added additional logging around paypal payments
* Refactor region validation in StripeController
* Update region retrieval method in StripeController
Refactored the method GetCustomerRegionFromMetadata in StripeController. Previously, it returned null in case of nonexisting region key. Now, it checks all keys with case-insensitive comparison, and if no "region" key is found, it defaults to "US". This was done to handle cases where the region key might not be properly formatted or missing.
* Updated switch expression to be switch statement
* Updated new log to not log user input
* Add handling for 'payment_method.attached' webhook
* Cancelling unpaid premium subscriptions
* Update hardcoded Stripe status strings to constants
* Updated expand string to use snake_case
* Removed unnecessary comments
