fix: Parallelize loading attachments in document presenter (#2184)

closes #2157

server/presenters/document.js

@@ -12,13 +12,15 @@ type Options = {
 async function replaceImageAttachments(text: string) {
   const attachmentIds = parseAttachmentIds(text);
 
-  for (const id of attachmentIds) {
+  await Promise.all(
+    attachmentIds.map(async (id) => {
       const attachment = await Attachment.findByPk(id);
       if (attachment) {
         const accessUrl = await getSignedImageUrl(attachment.key);
         text = text.replace(attachment.redirectUrl, accessUrl);
       }
-  }
+    })
+  );
 
   return text;
 }