[PHP] Accessing/invoking all trait member using trait name inside trait body must produce error

### Apache NetBeans version

Apache NetBeans 18

### What happened

Accessing/invoking all trait member using its name inside its body must produce error.

### How to reproduce

```php
fnInstance();
```

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

No / Don't know

### Operating System

Windows 10

### JDK

Java: 14.0.1; Java HotSpot(TM) 64-Bit Server VM 14.0.1+7 Runtime: Java(TM) SE Runtime Environment 14.0.1+7

### Apache NetBeans packaging

Apache NetBeans binary zip

### Anything else

_No response_

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

No

Use the PHP reproduction in the issue as the starting case and run it through NetBeans 18's PHP editor diagnostics. Check how trait-body references using MyTrait are analyzed versus static, self, and $this references. Done means the MyTrait property and method accesses are reported as errors while the other listed forms remain accepted.

Written by the indexing model from the issue text.