Fixed dashboard nested fields filtering

[asteriscos]

Description

In the dashboards, nested fields were not properly identified and because of this, the query results didn't work as expected. To fix it we added the index pattern information to the query building methods, so the field information can be retrieved and analyzed to structure the query object.

Closes #4430

[Mayons95]

TR ✔️
LGTM !

[yenienserrano]

LGTM!

Screenshot

[AlexRuiz7]

LGTM!

[github-actions]

The backport to 4.4-1.2-wzd 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-4.4-1.2-wzd 4.4-1.2-wzd
# Navigate to the new working tree
cd .worktrees/backport-4.4-1.2-wzd
# Create a new branch
git switch --create backport-4425-to-4.4-1.2-wzd
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 850646e58c9cf6ee74538af23d0a2cf7b0655df3
# Push it to GitHub
git push --set-upstream origin backport-4425-to-4.4-1.2-wzd
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-4.4-1.2-wzd

Then, create a pull request where the base branch is 4.4-1.2-wzd and the compare/head branch is backport-4425-to-4.4-1.2-wzd.