Formatting lost when copy-pasting from Google Docs to markdown widget

Describe the bug

Formatting such as bold text, headings, links etc. are lost when copy pasting from a word processor such as Google Docs.

Here is the behavior from Netlify CMS 2.15.72:

To Reproduce

Copy formatted text from a word processor and paste it into a markdown widget with "Rich text" selected:

Expected behavior

The formatting remains and is converted to markdown.

Screenshots

See recordings above.

Applicable Versions:

CMS configuration

n/a

Additional context

Happy to make an attempt with a PR to fix this if you can point me to the code :)

decaporg / decap-cms