Fix additional property name for TermsQuery

[flobernd]

This seems to be a copy/paste mistake made by me when I implemented the behavior_meta tag.

@swallez @Anaethelion @ezimuel @picandocodigo @miguelgrinberg @l-trotta @pquentin @JoshMock Please check, if this is a breaking change in any of your clients. Most likely only the static language clients should be affected - if at all.

[miguelgrinberg]

I'm not using the key and value names, just their types, so for the Python DSL client this is fine 👍

[JoshMock]

AdditionalProperty behaviors are currently ignored by JS codegen. 👍

[swallez]

It's not implemented yet in the Java generator, so no problem.

[github-actions]

The backport to 8.16 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-8.16 8.16
# Navigate to the new working tree
cd .worktrees/backport-8.16
# Create a new branch
git switch --create backport-3038-to-8.16
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 16130b9a2f165a445d3201043ea47278eed1c164
# Push it to GitHub
git push --set-upstream origin backport-3038-to-8.16
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-8.16

Then, create a pull request where the base branch is 8.16 and the compare/head branch is backport-3038-to-8.16.