S3 Storage region and credentials fix

Fixed transactional emails (such as forgot-password) failing to send for stores whose media storage is hosted in a different AWS region than the platform default.

This includes:

• Fixes forgot-password and other transactional emails failing to send

• Email system now always uses the correct shared AWS region and credentials

• Applies regardless of a store's own storage configuration

How it benefits the Merchant

Ensures critical transactional emails like password resets reliably reach customers, reducing account lockouts and support tickets.

Potential FAQs

Q: Do I need to change my store's storage configuration?

A: No — the email system now always uses the correct shared region and credentials automatically.

Q: Which stores were affected by this issue?

A: Stores whose media storage was hosted in a different AWS region than the platform default.