Calculation table using Static formulas

[esellier]

Checklist

• [ X] I have searched budibase discussions and github issues to check if my issue already exists

Hosting

• Self
  • Method: Docker compose
  • Budibase Version: 3.25.2

Describe the bug
Using a static formula for Group By is not working.

To Reproduce
Create table with :

• a Static Formula (returning a number).
  Create a Calculation Table using
• count _id
• group by the static formula

Expected behavior
Table filled with count of ids group by the value of static formula