fix: Attachments on public share links broken when using AWS Accelerate

fix: Attachments broken when using non-collab and AWS bucket on the same host
(https://github.com/outline/outline/discussions/3274\)

server/presenters/env.ts

@@ -6,6 +6,7 @@ export default function present(env: Record<string, any>): PublicEnv {
   return {
     URL: env.URL.replace(/\/$/, ""),
     AWS_S3_UPLOAD_BUCKET_URL: env.AWS_S3_UPLOAD_BUCKET_URL,
+    AWS_S3_ACCELERATE_URL: env.AWS_S3_ACCELERATE_URL,
     CDN_URL: (env.CDN_URL || "").replace(/\/$/, ""),
     COLLABORATION_URL: (env.COLLABORATION_URL || env.URL)
       .replace(/\/$/, "")