Fixup config parsing

patches/server/0005-Paper-config-files.patch

@@ -855,10 +855,10 @@ index 0000000000000000000000000000000000000000..69add4a7f1147015806bc9b63a8340d1
 +}
 diff --git a/src/main/java/io/papermc/paper/configuration/PaperConfigurations.java b/src/main/java/io/papermc/paper/configuration/PaperConfigurations.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..715d572351c295cd48c558bb1dfbef6126fc51d0
+index 0000000000000000000000000000000000000000..d937adbe40687546686cddb27f2ae34f2795e9db
 --- /dev/null
 +++ b/src/main/java/io/papermc/paper/configuration/PaperConfigurations.java
-@@ -0,0 +1,468 @@
+@@ -0,0 +1,469 @@
 +package io.papermc.paper.configuration;
 +
 +import com.google.common.base.Suppliers;
@@ -1054,6 +1054,7 @@ index 0000000000000000000000000000000000000000..715d572351c295cd48c558bb1dfbef61
 +            .header(GLOBAL_HEADER)
 +            .serializers(builder -> builder
 +                .register(new PacketClassSerializer())
++                .register(IntOr.Disabled.SERIALIZER)
 +                .register(IntOr.Default.SERIALIZER)
 +                .register(DoubleOr.Default.SERIALIZER)
 +            );