Describe the bug

When I receive a notification from Push Notifications I don't see the icon of the organization.

To Reproduce
Steps to reproduce the behavior:

1. Enable push notifications
2. Generate a notification
3. See error

Expected behavior

To see the icon as it's configured on the Admin Configuration.

Screenshots

Extra data (please complete the following information):

• Decidim Version: 0.27.0.rc1
• Decidim installation: Metadecidim