Mark GLEX as feature category acquisition

What does this MR do and why?

Mark GLEX as feature category acquisition

fixes: #582969 EE: true

References

Screenshots or screen recordings

No visual changes

How to set up and validate locally

No functional changes, this only affects the ownership of the GLEX gem.

MR acceptance checklist

Evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Related to #582969