Change metric data category to Operational

What does this MR do and why?

From @nk312

Certain customers opt-out of optional metrics, but since this metric will be used to measure overall CI adoption, we'll need to change the category to Operational to have sufficient data for customers across the board

Screenshots or screen recordings

N/A

How to set up and validate locally

This should not change anything. Used on data's side.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #406807 (closed)