Fix to be able to redownload avatar and header (#16190)

* Fix to reset if header and avatar download fails

* Add RedownloadAvatarWorker and RedownloadHeaderWorker

app/models/concerns/account_avatar.rb

@@ -21,7 +21,7 @@ module AccountAvatar
     has_attached_file :avatar, styles: ->(f) { avatar_styles(f) }, convert_options: { all: '-strip' }, processors: [:lazy_thumbnail]
     validates_attachment_content_type :avatar, content_type: IMAGE_MIME_TYPES
     validates_attachment_size :avatar, less_than: LIMIT
-    remotable_attachment :avatar, LIMIT
+    remotable_attachment :avatar, LIMIT, suppress_errors: false
   end
 
   def avatar_original_url

app/models/concerns/account_header.rb

@@ -22,7 +22,7 @@ module AccountHeader
     has_attached_file :header, styles: ->(f) { header_styles(f) }, convert_options: { all: '-strip' }, processors: [:lazy_thumbnail]
     validates_attachment_content_type :header, content_type: IMAGE_MIME_TYPES
     validates_attachment_size :header, less_than: LIMIT
-    remotable_attachment :header, LIMIT
+    remotable_attachment :header, LIMIT, suppress_errors: false
   end
 
   def header_original_url

app/models/concerns/remotable.rb

@@ -28,9 +28,11 @@ module Remotable
           end
         rescue Mastodon::UnexpectedResponseError, HTTP::TimeoutError, HTTP::ConnectionError, OpenSSL::SSL::SSLError => e
           Rails.logger.debug "Error fetching remote #{attachment_name}: #{e}"
+          public_send("#{attachment_name}=", nil) if public_send("#{attachment_name}_file_name").present?
           raise e unless suppress_errors
         rescue Paperclip::Errors::NotIdentifiedByImageMagickError, Addressable::URI::InvalidURIError, Mastodon::HostValidationError, Mastodon::LengthValidationError, Paperclip::Error, Mastodon::DimensionsValidationError, Mastodon::StreamValidationError => e
           Rails.logger.debug "Error fetching remote #{attachment_name}: #{e}"
+          public_send("#{attachment_name}=", nil) if public_send("#{attachment_name}_file_name").present?
         end
 
         nil