Cannot download files from within directories of named volume in ee v2.37.0 (ce is OK)

Before you start please confirm the following.

• Yes, I've searched similar issues on GitHub.
• Yes, I've checked whether this issue is covered in the Portainer documentation.

Problem Description

Portainer EE V2.37.0 when browsing a named volume, files can only be downloaded from the root directory, when in a folder the file fails to download.

DBG github.com/portainer/agent/http/proxy/agentproxy.go:34 > HTTP error | error="open /var/lib/docker/volumes/weechat_data/_data/alias.conf: no such file or directory" msg="Unable to open file" status_code=500

The file path I tried to download for this particular error message was /var/lib/docker/volumes/weechat_data/_data/.config/weechat/alias.conf

This works just fine downloading files that are not in folders. I also only had the issue since upgrading to EE, so I downgraded back to CE v2.37.0 and this error does not occur.

Expected Behavior

When clicking the download button in the named volume browser, files can be downloaded that are nested in directories (not just from the root)

Actual Behavior

Downloading a file within a directory from the volume browser generates a file not found error.

Steps to Reproduce

1. Open volume browser for a named volume with files inside a directory.
2. Open a folder
3. Click the download link next to a file

Portainer logs or screenshots

No response

Portainer version

2.37.0

Portainer Edition

Business Edition (BE/EE) with 5NF / 3NF license

Platform and Version

Docker version 29.1.3, build f52814d454173982e6692dd7e290a41b828d9cbc

OS and Architecture

Alpine Linux 3.23 (aarch64)

Browser

Google Chrome 144

What command did you use to deploy Portainer?

name: portainer
services:
  portainer:
    image: portainer/portainer-ee:2.37.0-alpine
    container_name: portainer
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - portainer_data:/data
    networks:
      - shared
    restart: unless-stopped
    deploy:
      resources:
        limits:
          memory: 1000M
  portainer-agent:
    image: portainer/agent:2.37.0-alpine
    container_name: portainer-agent
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - /var/lib/docker/volumes:/var/lib/docker/volumes
      - /:/host
    networks:
      - shared
    restart: unless-stopped
    deploy:
      resources:
        limits:
          memory: 200M
    depends_on:
      - portainer

networks:
  shared:
    external: true

volumes:
  portainer_data:
    name: portainer_data

Additional Information

No response