[#2000] When converting a JsonObject to string, we should use JsonObject#encode

Author: DavideD

hibernate-reactive-core/src/main/java/org/hibernate/reactive/type/descriptor/jdbc/ReactiveJsonJdbcType.java

@@ -87,6 +87,6 @@ private static String toJsonString(Object value) {
 			return null;
 		}
 		// Value should be a JsonObject
-		return value.toString();
+		return ( (JsonObject) value ).encode();
 	}
 }

hibernate-reactive-core/src/test/java/org/hibernate/reactive/types/StringToJsonConverter.java

@@ -6,7 +6,6 @@
 package org.hibernate.reactive.types;
 
 import io.vertx.core.json.JsonObject;
-
 import jakarta.persistence.AttributeConverter;
 import jakarta.persistence.Converter;
 
@@ -20,6 +19,6 @@ public JsonObject convertToDatabaseColumn(String string) {
 
     @Override
     public String convertToEntityAttribute(JsonObject dbData) {
-        return dbData == null ? null : dbData.encodePrettily();
+        return dbData == null ? null : dbData.encode();
     }
 }