Add GraalVM reflection config for JsonPropertyAccessor

[rsenden]

Expected Behavior

JsonPropertyAccessor should be usable out of the box in GraalVM native images by providing proper reflection configuration.

Current Behavior

Evaluating an SpEL expression that invokes a List method like List::contains on a Jackson ArrayNode fails with the following exception message:

org.springframework.expression.spel.SpelEvaluationException: EL1004E: Method call: Method contains(java.lang.String) cannot be found on type org.springframework.integration.json.JsonPropertyAccessor$ArrayNodeAsList

Context

We have a command-line application that invokes various REST endpoints and allows users to specify SpEL expressions to filter the results. We create our SpEL EvaluationContext using the following method:

private static final EvaluationContext createSpelEvaluationContext() {
        DefaultFormattingConversionService  conversionService = new DefaultFormattingConversionService();
        conversionService.addConverter(new JsonNodeWrapperToJsonNodeConverter());
        conversionService.addConverter(new ObjectToJsonNodeConverter());
        DateTimeFormatterRegistrar dateTimeRegistrar = new DateTimeFormatterRegistrar();
        dateTimeRegistrar.setDateFormatter(DateTimeFormatter.ISO_DATE);
        dateTimeRegistrar.setDateTimeFormatter(DateTimeFormatter.ISO_OFFSET_DATE_TIME);
        dateTimeRegistrar.registerFormatters(conversionService);
        SimpleEvaluationContext context = SimpleEvaluationContext
                .forPropertyAccessors(new JsonPropertyAccessor())
                .withConversionService(conversionService)
                .withInstanceMethods()
                .build();
        return context;
    }

When a user specifies a filtering expression like someJsonArrayProperty.contains('someValue'), this works fine in the regular Java version of our CLI application, but fails in the native images.