Move 'paused' removal milestone to 16.0

What does this MR do and why?

Describe in detail what your merge request does and why.

This MR updates the removal milestone for the changes in !73530 (merged) to %16.0 instead of %15.0 so that it matches the milestone of other related changes and becomes less confusing for users and maintainers.

Screenshots or screen recordings

These are strongly recommended to assist reviewers and reduce the time to merge your change.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

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.