Revert "Merge branch 'renovate/dompurify-3.x' into 'master'"

What does this MR do and why?

Revert "Merge branch 'renovate/dompurify-3.x' into 'master'"

This reverts merge request !167365 (merged).

Latest DomPurify results in missing labels in Mermaid diagrams.

See https://github.com/facebook/docusaurus/issues/10526 / https://github.com/mermaid-js/mermaid/issues/5904 / https://github.com/cure53/DOMPurify/issues/1002#issuecomment-2381258197

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

How to set up and validate locally

Sample mermaid diagram:

graph TD;
    A-->B;
    A-->C;
    B-->D;
    C-->D;

The diagram should be rendered with labels