YQL-20496: Fix highlighting again

Fixed [issues](https://nda.ya.ru/t/e98IQkef7Mhm96):
1. Types had higher precedence than UDF and so `Yson::Parse`
   was badly highlighted. So function unit was split to let
   types to highlight `Decimal(...)` correctly, as well as
   UDFs.
2. There was a hack in a Monaco generator (probably I forgot
   to fix it) with hardcoded rules for embedded language, so
   JSON rule was forgotted to be deleted.
commit_hash:b24527891525dad65bfbafbc209fd3cb7f087f32

0 files changed, 0 insertions, 0 deletions