Revert "Relaxing Korean formatting patterns so that national prefix is no longer dropped."

This reverts commit b7d22cc5c9d8e3601caac1aff74ac913e032fc07
diff --git a/java/src/com/android/i18n/phonenumbers/data/PhoneNumberMetadataProto_KR b/java/src/com/android/i18n/phonenumbers/data/PhoneNumberMetadataProto_KR
index 47f4390..f74cb4d 100644
--- a/java/src/com/android/i18n/phonenumbers/data/PhoneNumberMetadataProto_KR
+++ b/java/src/com/android/i18n/phonenumbers/data/PhoneNumberMetadataProto_KR
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