add unknown to DateTimeFormatTypes (#50402)

* add unknown to DateTimeFormatTypes

* move unknown to es2019.intl instead

* Accepted baselines.

Co-authored-by: long.ho <long.ho@cloudkitchens.com>

src/compiler/commandLineParser.ts

@@ -67,6 +67,7 @@ namespace ts {
         ["es2019.object", "lib.es2019.object.d.ts"],
         ["es2019.string", "lib.es2019.string.d.ts"],
         ["es2019.symbol", "lib.es2019.symbol.d.ts"],
+        ["es2019.intl", "lib.es2019.intl.d.ts"],
         ["es2020.bigint", "lib.es2020.bigint.d.ts"],
         ["es2020.date", "lib.es2020.date.d.ts"],
         ["es2020.promise", "lib.es2020.promise.d.ts"],

src/lib/es2019.d.ts

@@ -3,3 +3,4 @@
 /// <reference lib="es2019.object" />
 /// <reference lib="es2019.string" />
 /// <reference lib="es2019.symbol" />
+/// <reference lib="es2019.intl" />

src/lib/es2019.intl.d.ts

@@ -0,0 +1,5 @@
+declare namespace Intl {
+    interface DateTimeFormatPartTypesRegistry {
+        unknown: any
+    }
+}

src/lib/libs.json

@@ -43,6 +43,7 @@
         "es2019.object",
         "es2019.string",
         "es2019.symbol",
+        "es2019.intl",
         "es2020.bigint",
         "es2020.date",
         "es2020.promise",