Update utility class Emoji.java for Emoji 11

This CL removes the Emoji 5.0 info from Emoji.java since they are
supported by ICU. It adds emoji added in Emoji 11.

Test: atest android.text.EmojiTest
Test: Verified that ICU handles Emoji 5.0 emoji
Test: Verified hardware keyboard backspace with hair color emoji
Test: Visually verified cursor moves with hardware keyboard

Bug: 77148691
Change-Id: I40b290fcea201cf5e35ad4c461f8d8056b8c3739