[VSCode extension] Organize Imports fails due to IOOBE

### Apache NetBeans version

Apache NetBeans 15

### What happened

Doing `Organize Imports` does nothing when there are unresolved imports (if the only action to take, is to remove unused imports, it works as expected). The extension's log shows (there's 3 duplicate lines per attempt; this isn't the output from 3 attempts):
```
Index 23 out of bounds for length 23
Index 23 out of bounds for length 23
Index 23 out of bounds for length 23
```

### How to reproduce

Open a Java file with unresolved imports and do Organize Imports.

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

No / Don't know

### Operating System

Windows 11

### JDK

openjdk full version "20-ea+22-1594"

### Apache NetBeans packaging

Apache VSNetBeans for VSCode

### Anything else

_No response_

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

Yes

### Code of Conduct

Yes

Start by reproducing the failure in the VSCode extension with a Java file containing unresolved imports, then inspect the Organize Imports path and its extension log output. Done means Organize Imports completes without the IndexOutOfBoundsException and handles unresolved imports as expected.

Written by the indexing model from the issue text.