Update the DEFAULT_CODEC_REGISTRY order

Ensure that KotlinCodecProvider is used to handle any kotlin
types first, then fall back to any native java codecs.

For non kotlin users this will be a NOOP as the actual kotlin codec
providers won't be on the class path

JAVA-5928

Author: rozza

driver-core/src/main/com/mongodb/MongoClientSettings.java

@@ -70,7 +70,9 @@
 @Immutable
 public final class MongoClientSettings {
     private static final CodecRegistry DEFAULT_CODEC_REGISTRY =
-            fromProviders(asList(new ValueCodecProvider(),
+            fromProviders(asList(
+                    new KotlinCodecProvider(),
+                    new ValueCodecProvider(),
                     new BsonValueCodecProvider(),
                     new DBRefCodecProvider(),
                     new DBObjectCodecProvider(),
@@ -85,8 +87,7 @@ public final class MongoClientSettings {
                     new BsonCodecProvider(),
                     new EnumCodecProvider(),
                     new ExpressionCodecProvider(),
-                    new Jep395RecordCodecProvider(),
-                    new KotlinCodecProvider()));
+                    new Jep395RecordCodecProvider()));
 
     private final ReadPreference readPreference;
     private final WriteConcern writeConcern;