fix serializing TextColor with name

patches/server/0423-initial-work-on-native-Adventure-codecs.patch

@@ -11,10 +11,10 @@ public net.minecraft.network.chat.contents.TranslatableContents filterAllowedArg
 
 diff --git a/src/main/java/io/papermc/paper/adventure/AdventureCodecs.java b/src/main/java/io/papermc/paper/adventure/AdventureCodecs.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..6f5a2bdf50de97e6180b42cf988c3e98385a99ee
+index 0000000000000000000000000000000000000000..db13894e2710b933f69f3adaa7e728461e3cf049
 --- /dev/null
 +++ b/src/main/java/io/papermc/paper/adventure/AdventureCodecs.java
-@@ -0,0 +1,271 @@
+@@ -0,0 +1,277 @@
 +package io.papermc.paper.adventure;
 +
 +import com.mojang.datafixers.util.Either;
@@ -73,7 +73,13 @@ index 0000000000000000000000000000000000000000..6f5a2bdf50de97e6180b42cf988c3e98
 +            final @Nullable NamedTextColor value = NamedTextColor.NAMES.value(s);
 +            return value != null ? DataResult.success(value) : DataResult.error(() -> "Cannot convert " + s + " to adventure NamedTextColor");
 +        }
-+    }, TextColor::asHexString);
++    }, textColor -> {
++        if (textColor instanceof NamedTextColor named) {
++            return NamedTextColor.NAMES.keyOrThrow(named);
++        } else {
++            return textColor.asHexString();
++        }
++    });
 +
 +    private static final Codec<Key> KEY_CODEC = Codec.STRING.comapFlatMap(s -> {
 +        return Key.parseable(s) ? DataResult.success(Key.key(s)) : DataResult.error(() -> "Cannot convert " + s + " to adventure Key");