find command gives a wrong Y coordinate.

## What do you need help with?
Why does when i try to run
find end_portal_frame
it tells the correct X and Z but not Y?

## Final checklist
- [x] I know how to properly use check boxes
- [x] I have not used any OwO's or UwU's in this issue.

Start by reproducing the `find end_portal_frame` command and compare its reported X, Y, and Z coordinates with the attached screenshot. Trace the `find` command's coordinate-reporting entry point and verify the fix by confirming that the Y coordinate matches the located structure.

Written by the indexing model from the issue text.