META: Fix all consultation CI warnings.

Problem/Motivation

There are several warnings for the CI pipeline around coding standards (eslint, phpcs, phpstan, stylelint) which should be fixed in their own child issues:

https://git.drupalcode.org/project/consultation/-/pipelines/101814

Steps to reproduce

Proposed resolution

Fix various problems in child issues.

Remaining tasks

• Create child issues
• Fix and close all child issues

User interface changes

API changes

Data model changes