Unable to unfold code block in java editor

### Apache NetBeans version

Apache NetBeans 19

### What happened

When folding the if part of an if/else statement the if part becomes impossible to unfold. This only happens if the else is on the same line as the closing curly brace.



### How to reproduce

Just open a file with a if/else statement where the else is on the same line as the closing curly brace of the if.

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

No / Don't know

### Operating System

Fedora 38

### JDK

OpenJDK 64-Bit Server VM 11.0.20+8

### Apache NetBeans packaging

Apache NetBeans binary zip

### Anything else

_No response_

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

Yes

Reproduce the issue in Apache NetBeans 19 using a Java if/else statement with else on the same line as the closing brace, then inspect the Java editor's code-folding behavior. Done means the folded if block can be unfolded reliably in that formatting case.

Written by the indexing model from the issue text.