Add size prop to Text

[GuillaumeRx]

This adds a new optional prop to Text called size.

It allows two values, sm and md that relates to bodySm and bodyMd in extension.

It should default to md.

Fixes: #2905

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.48%. Comparing base (a5714d5) to head (44929c6).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2908   +/-   ##
=======================================
  Coverage   94.48%   94.48%           
=======================================
  Files         487      487           
  Lines       10427    10427           
  Branches     1598     1598           
=======================================
  Hits         9852     9852           
  Misses        575      575           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.