Fixes part of #23626. This was preventing emoji like `:family_man,_woman,_girl,_boy:` from displaying.
This script pulls from our previously custom-written emoji strings and fills in the rest from CLDR. It also removes 4 custom emoji which collide with some of the new CLDR names (they will now just be called by their CLDR name).
This script pulls from our previously custom-written emoji strings to prepare to fill in the rest from CLDR. This commit has no user-facing changes.