False collection warnings

### Apache NetBeans version

Apache NetBeans 17

### What happened

There are many cases in which Netbeans won't recognize, that a collection has been accessed, one of them are functional operators. But it also gives this warning for class variables when they have been passed to the outside as method result, also when wrapped in a unmodifiable collection.

### How to reproduce

` var allDirs = new ArrayList();
allDirs.add(new File("directoryname"));
allDirs.forEach(oneDir -> System.out.println(oneDir.getName()));
`

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

No / Don't know

### Operating System

Windows 10

### JDK

17

### Apache NetBeans packaging

Apache NetBeans provided installer

### Anything else

All the time.
It's nothing serious, just annoying.

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

No

Start by reproducing the warning in Apache NetBeans 17 with the provided ArrayList and forEach example on Windows 10/JDK 17. Investigate the collection-access analysis behind this inspection, including cases where a class variable is returned or wrapped in an unmodifiable collection. Done means valid collection accesses no longer produce false warnings.

Written by the indexing model from the issue text.