fix(java): NonExistentEnum on mode serializeEnumByName (#1904)

## What does this PR do?
Handle NonExistentEnum on mode serializeEnumByName by returning UNKNOWN.
since there are no relevancy anymore by using enum ordinal.

## Related issues

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## Does this PR introduce any user-facing change?

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- [ ] Does this PR introduce any public API change?
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## Benchmark

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java/fury-core/src/main/java/org/apache/fury/serializer/NonexistentClassSerializers.java

@@ -34,6 +34,7 @@
 import org.apache.fury.resolver.ClassInfoHolder;
 import org.apache.fury.resolver.ClassResolver;
 import org.apache.fury.resolver.MetaContext;
+import org.apache.fury.resolver.MetaStringResolver;
 import org.apache.fury.resolver.RefResolver;
 import org.apache.fury.serializer.NonexistentClass.NonexistentEnum;
 import org.apache.fury.type.Descriptor;
@@ -226,14 +227,21 @@ public Object read(MemoryBuffer buffer) {
 
   public static final class NonexistentEnumClassSerializer extends Serializer {
     private final NonexistentEnum[] enumConstants;
+    private final MetaStringResolver metaStringResolver;
 
     public NonexistentEnumClassSerializer(Fury fury) {
       super(fury, NonexistentEnum.class);
+      metaStringResolver = fury.getMetaStringResolver();
       enumConstants = NonexistentEnum.class.getEnumConstants();
     }
 
     @Override
     public Object read(MemoryBuffer buffer) {
+      if (fury.getConfig().serializeEnumByName()) {
+        metaStringResolver.readMetaStringBytes(buffer);
+        return NonexistentEnum.UNKNOWN;
+      }
+
       int ordinal = buffer.readVarUint32Small7();
       if (ordinal >= enumConstants.length) {
         ordinal = enumConstants.length - 1;

java/fury-core/src/test/java/org/apache/fury/serializer/NonexistentClassSerializersTest.java

@@ -122,6 +122,28 @@ public void testNonexistentEnum(boolean scopedMetaShare) {
     assertEquals(o, NonexistentClass.NonexistentEnum.V1);
   }
 
+  @Test(dataProvider = "scopedMetaShare")
+  public void testNonexistentEnum_AsString(boolean scopedMetaShare) {
+    Fury fury =
+        furyBuilder(scopedMetaShare)
+            .withDeserializeNonexistentClass(true)
+            .serializeEnumByName(true)
+            .build();
+    String enumCode = ("enum TestEnum {" + " A, B" + "}");
+    Class<?> cls = JaninoUtils.compileClass(getClass().getClassLoader(), "", "TestEnum", enumCode);
+    Object c = cls.getEnumConstants()[1];
+    assertEquals(c.toString(), "B");
+    byte[] bytes = fury.serialize(c);
+    Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
+    Fury fury2 =
+        furyBuilder(scopedMetaShare)
+            .withDeserializeNonexistentClass(true)
+            .serializeEnumByName(true)
+            .build();
+    Object o = fury2.deserialize(bytes);
+    assertEquals(o, NonexistentClass.NonexistentEnum.UNKNOWN);
+  }
+
   @Test(dataProvider = "scopedMetaShare")
   public void testNonexistentEnumAndArrayField(boolean scopedMetaShare) throws Exception {
     String enumStructCode1 =