organzie imports: add jakarta since it's the successor to javax

Now that the Eclipse Foundation has become the new home for Java EE and the packages have been moved to Jakarta, this should also be reflected in the "Organize Imports" feature in the Eclipse IDE.

We use this order at our company:

```
java
javax
jakarta
org
com
````

Start at the Eclipse IDE's Organize Imports feature and trace how the existing java and javax package order is defined. Confirm where import groups are configured, then ensure jakarta is handled in the requested sequence between javax and org; done means the behavior is covered by the relevant existing tests.

Written by the indexing model from the issue text.