Parsed variables in function names incorrectly flagged as syntax errors

### Apache NetBeans version

Apache NetBeans 23

### What happened

In PHP, function names can be constructed as strings at runtime.

Such a process can involve joining two strings together, one of which is a variable.

These strings could be joined using the concatenation operator ('string_literal' . $stringVariable) or by using double quotes so that PHP parses the variable "string_literal$stringVariable", and this can be done at the actual function call "string_literal$stringVariable"()

If the concatenation operator is used, NetBeans is perfectly happy, but if double quotes and variable parsing is used, NetBeans flags it as a syntax error:


### Language / Project Type / NetBeans Component

PHP project

### How to reproduce

Enter this code in a PHP file:

```

Use the PHP snippet in the issue as the reproduction, comparing the concatenation and interpolated-string forms of the dynamic function call in NetBeans. Confirm the behavior against PHP's output; done means the interpolated form is accepted without a syntax error while preserving the existing valid behavior.

Written by the indexing model from the issue text.