Allow props drilldown in markdown editor

What does this MR do and why?

Similar to !110129 (merged), this MR allows the markdown-editor component to drilldown props to the markdown/field component by using v-bind=$attrs.

This allows any new props added to the markdown/field component to be automatically supported in the markdown-editor component.

Screenshots or screen recordings

N/A

Testing locally

You can test the markdown editor component in wikis.

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.