message: Issue ICU date addition
  Backout Window extension break.
diff: @@ -10,8 +10,7 @@ add_library(
  link_threads(icu_extension)
  disable_target_warnings(icu_extension)
  -build_loadable_extension(icu icu-collate.cpp icu-extension.cpp icu-dateadd.cpp
  - icu-datepart.cpp icu-datetrunc.cpp)
  +build_loadable_extension(icu icu-collate.cpp icu-extension.cpp)
  install(
  TARGETS icu_extension
  EXPORT "${DUCKDB_EXPORT_SET}"
  