Fixes from spec 2549

[l-trotta]

Update to the generated code from the latest specification and code-generator. This includes elastic/elasticsearch-specification#2549, which fixes #610, fixes #629, fixes #632.

[github-actions]

The backport to 8.14 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-8.14 8.14
# Navigate to the new working tree
cd .worktrees/backport-8.14
# Create a new branch
git switch --create backport-800-to-8.14
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick --mainline 1 64ec6198653dd14a91d06e4ede2c32ab27b95290
# Push it to GitHub
git push --set-upstream origin backport-800-to-8.14
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-8.14

Then, create a pull request where the base branch is 8.14 and the compare/head branch is backport-800-to-8.14.

[puppylpg]

May I ask will this be backported into 8.13.x?