Navbar search shows "Loading..." forever instead of expected project
### Summary
Navbar search shows "Loading..." forever instead of expected project
### Steps to reproduce
1. Create a project (in any namespace) called "CI base images"
2. Type "ci" in the navbar search
### What is the current *bug* behavior?
It shows "Loading..." no matter how long you wait.
### What is the expected *correct* behavior?
It would show the project "\<Your name\> / CI base images".
### Relevant logs and/or screenshots
An AJAX request to `https://gitlab.com/search/autocomplete?project_id=13083&project_ref=&term=ci` is made, which returns
```json
[]
```
### Output of checks
This bug happens on GitLab.com.
issue