javadoc completion doesn't work in "package-info.java"

### Apache NetBeans version

Apache NetBeans 24 release candidate

### What happened

(24-rc3)

Code completion for javadoc doesn't work in `package-info.java` file.

### Language / Project Type / NetBeans Component

java code completion

### How to reproduce

1. New project -> java with maven, Java Application -> finish
2. Over the package folder, new -> Java Package Info
3. In the "package-info.java" above the package decl add a comment, like:

/**
* {@
*/
package com.raelity.play.mavenproject2;
4. With the cursor after the "{@", invoke code completion.

Observe: "No suggestions"

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

No / Don't know

### Operating System

ubuntu

### JDK

openjdk 23.0.1 2024-10-15

### Apache NetBeans packaging

Apache NetBeans binary zip

### Anything else

Every time

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

No

Reproduce the issue in a Maven Java Application by creating a package-info.java file and invoking completion after '{@' in its Javadoc comment. Trace the Java code-completion handling for package-info.java and compare it with ordinary Java source files. Done means Javadoc completion suggestions appear in package-info.java.

Written by the indexing model from the issue text.