Fix total issues chart
What does this MR do and why?
This change fixes the total issues chart on issues analytics page.
MR acceptance checklist
Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.
Screenshots or screen recordings
Before:
After:
How to set up and validate locally
- Ensure that you're on ultimate.
- Go to a project -> Analytics -> Issue analytics
- The chart should load (ensure that you have at least one issue created recently)
Related to #482428 (closed)