* make miniToc pure data and no html strings
* fixups
* minimize content in miniToc prop
* minimize content in miniToc prop
* some types refactoring
* fix tests
* semantic rendering of miniTocItems
* feat: create nested mini toc structure to simplify semantic rendering
* remove className usage of indentationLevel in miniToc rendering
* manually run script/graphql/update-files.js to update pre-rendered files
* use less brittle regex method to extract number