Make optimizedText work with wrapped parsers

Author: felixbarny

libs/x-content/impl/src/main/java/org/elasticsearch/xcontent/provider/json/JsonXContentParser.java

@@ -15,6 +15,7 @@
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.core.JsonToken;
 import com.fasterxml.jackson.core.exc.InputCoercionException;
+import com.fasterxml.jackson.core.filter.FilteringParserDelegate;
 import com.fasterxml.jackson.core.io.JsonEOFException;
 
 import org.elasticsearch.core.IOUtils;
@@ -122,6 +123,10 @@ public XContentString optimizedText() throws IOException {
         if (currentToken().isValue() == false) {
             throwOnNoText();
         }
+        var parser = this.parser;
+        if (parser instanceof FilteringParserDelegate delegate) {
+            parser = delegate.delegate();
+        }
         if (parser instanceof ESUTF8StreamJsonParser esParser) {
             var bytesRef = esParser.getValueAsText();
             if (bytesRef != null) {