"Save Value to File" if > 100kB broken

### Apache NetBeans version

Apache NetBeans 30

### What happened

When inspecting a variable whose string representation is larger than 100 kB in Java debugger, the option to save the variable's content to a file is offered, but only the first 100 kB plus "..." is actually saved to the file, rendering the option useless.

### Language / Project Type / NetBeans Component

Java Debugger Variable

### How to reproduce

Inspect a variable whose string representation is larger than 100 kB in Java debugger, click the "..." of the value column and choose "Save Value to File".

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

Apache NetBeans 26 or earlier

### Operating System

Linux Mint 22.3

### JDK

OpenJDK 21

### Apache NetBeans packaging

Community provided installer

### Anything else

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

No

Start by reproducing the issue in the Java debugger: inspect a variable whose string representation exceeds 100 kB and choose “Save Value to File” from the value column. Trace the debugger’s variable-value handling for this action and verify that the saved file contains the complete representation rather than the first 100 kB followed by “...”.

Written by the indexing model from the issue text.