Can't set break point in (JSF)-xhtml-File

### Apache NetBeans version

Apache NetBeans 13

### What happened

Setting a breakpoint in a xhtml-file (JSF) does not work.

### How to reproduce

_No response_

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

Apache NetBeans 12.3 or earlier

### Operating System

System: Windows 10 version 10.0 running on amd64; Cp1252; en_US (nb)

### JDK

Java: 17.0.3; OpenJDK 64-Bit Server VM 17.0.3+7

### Apache NetBeans packaging

Apache NetBeans provided installer

### Anything else

_No response_

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

No

### Code of Conduct

Yes

No source files, tests, or reproduction steps are provided. Start by reproducing the breakpoint failure in a JSF XHTML file on Apache NetBeans 13 with the reported Windows and JDK environment, then compare behavior with NetBeans 12.3 or earlier. Done means breakpoints in JSF XHTML files work again.

Written by the indexing model from the issue text.