Not honoring containerDelegate in BeanInfo

### Apache NetBeans version

Apache NetBeans 17

### What happened

Please find attached two minimum reproducible examples. One uses **maven** and the other one uses **ant**.

When creating a BeanInfo using netbeans, in the getBdescriptor() method, we can set the value "containerDelegate" using the following line of code to delegate to another container.

```java
beanDescriptor.setValue("containerDelegate", "getInnerPanel");
```

These examples work with all previous JDK versions, except for JDK 19
I also tested JDK 13, 14, 15, 16, 17 and 18 and they all work fine.

[DummyAnt.zip](https://github.com/apache/netbeans/files/11152746/DummyAnt.zip)
[DummyMaven.zip](https://github.com/apache/netbeans/files/11152747/DummyMaven.zip)

### How to reproduce

Using the Dummy Projects.

With any new JPanel, or using MainPanel:

- Drag or add a SectionPanel instance to MainPanel
- Then add any other widget (i.e. JLabel) from the palette in the SectionPanel instance

SectionPanel should be recognized as a Container, therefore the widget should get added into the SectionPanel instance

### Did this work correctly in an earlier version?

Did not test JDK19 with previous NetBeans versions

### Operating System

Windows 11

### JDK

19.0.2

### Apache NetBeans packaging

Apache NetBeans platform

### Anything else

- This problem occurs all the time under the aforementioned description

- **Here's a screenshot of how this example should look**


- And here's the Navigator screenshot showing that it works as expected


- **Here's a screenshot after attempting to perform the same steps using JDK19**

- Here's the Navigator screenshot showing that a widget cannot be added to the SectionPanel instance

### Are you willing to submit a pull request?

No

Start with the attached DummyAnt.zip and DummyMaven.zip examples and trace how BeanInfo handles the containerDelegate value on JDK 19. Reproduce the palette operation with MainPanel and SectionPanel; the work is done when SectionPanel is recognized as a Container and widgets can be added inside it as in earlier JDK versions.

Written by the indexing model from the issue text.