Draft: Use file-loader by default to import SVG images

What does this MR do and why?

This change enables imports of SVG files to use the URL instead of raw contents, it still allows ?raw for legacy imports but it documents this import method should no longer be used.

Screenshots or screen recordings

NA

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #391589