Email attachments are now handled with separate displays for image previews and regular files. This makes attachment areas easier to maintain and should provide a more consistent experience when viewing or managing files in Odoo messages.

Current implementation switch display between file attachment and image
attachment. This commit split those behaviour in 2 components.

Enterprise part: https://github.com/odoo/enterprise/pull/18747

Part of task-2365881

This update continues the revamp of subcontracting workflows to make manufacturing operations easier to manage and more reliable. Businesses using subcontracting should see a more consistent experience when coordinating outsourced production activities.