Merge branch '3.x' of github.com:FasterXML/jackson-databind into 3.x

Author: cowtowncoder

src/main/java/tools/jackson/databind/ser/jdk/JDKKeySerializers.java

@@ -284,13 +284,13 @@ public void serialize(Object value, JsonGenerator g, SerializationContext ctxt)
         {
             final Enum<?> en = (Enum<?>) value;
 
-            // 26-Nov-2025, tatu: Should probably start with "using index" setting
-            //    (may change in 3.1?)
-            if (ctxt.isEnabled(EnumFeature.WRITE_ENUMS_USING_TO_STRING)) {
-                g.writeName(_valuesToWrite.fromToString(ctxt.getConfig(), en)); 
-            } else if (ctxt.isEnabled(EnumFeature.WRITE_ENUM_KEYS_USING_INDEX)) {
+            // 26-Nov-2025, tatu: In 3.0 order was opposite (TO_STRING first,
+            //    then INDEX); changed in 3.1
+            if (ctxt.isEnabled(EnumFeature.WRITE_ENUM_KEYS_USING_INDEX)) {
                 // 14-Sep-2019, tatu: [databind#2129] Use this specific feature
                 g.writeName(String.valueOf(en.ordinal()));
+            } else if (ctxt.isEnabled(EnumFeature.WRITE_ENUMS_USING_TO_STRING)) {
+                    g.writeName(_valuesToWrite.fromToString(ctxt.getConfig(), en)); 
             } else {
                 g.writeName(_valuesToWrite.fromName(ctxt.getConfig(), en)); 
             }