Resolve "Burndown chart Banner shows up even if group has upgraded"

What does this MR do?

Fixes the promotion for the burndown chart and the default template to not show when you already have that feature.

Does this MR meet the acceptance criteria?

• Review
  • Has been reviewed by Backend
• Conform by the merge request performance guides
• Conform by the style guides
• Squashed related commits together

What are the relevant issue numbers?

Closes #3471 (closed), #3474 (closed)