No Alerts causes odd empty Table (Need no content message)

Description of problem:

When viewing a new project without any alerts, it's odd to see the "Alerts" tab in the Monitoring page show an empty table (just headers).

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

1. Create a new project
2. Navigate to the Monitoring => Alerts page

Actual results:

Empty table

Expected results:

A no content message

Reproducibility (Always/Intermittent/Only Once):

Always

Build Details:

4.7.0-0.nightly-2020-10-27-051128

Additional info: