Theme: Update typography token naming #76838
Description
Task: Rename typography tokens.
Background:
Typography tokens are defined in typography.json under the wpds-font grouping.
This continues discussion from:
As discussed, the current naming is problematic because properties like line-height and prospective tokens like letter-spacing are not aspects of font. There's also an inconsistency between the file name and the property grouping.
Last this left off, there was a "relatively strong preference" from @mirka toward naming these tokens typography. Unclear if @ciampo 's " 👍 " reaction is directed to this suggestion. I'm personally fine with it.