0a17976913
Fixes https://linear.app/chatwoot/issue/CW-6070/argumenterror-ephemeral-is-not-a-valid-file-type-argumenterror **Problem** The instagram webhooks containing ephemeral (disappearing) message were causing ArgumentError exceptions because this attachment type is not supported and was not in the enum validation. **Solution** - Added ephemeral to the unsupported_file_type? filter - Ephemeral attachments are now silently filtered out before processing, following the same pattern as existing unsupported types (template, unsupported_type)