…_typography_font_size_value` to JS.

We have to do this because the site editor is contained within an iframe and cannot, therefore, access the global CSS presets in the parent window.

… that the site editor can fetch values from the preset objects. Most notably these operations takes place in getValueFromPresetVariable() and getValueFromVariable()

…ls.js


My blod is typo

Co-authored-by: Andrew Serong <14988353+andrewserong@users.noreply.github.com>