Double HiDPI scaling when started on JetBrains JDK

### Apache NetBeans version

Apache NetBeans 23 release candidate

### What happened

Netbeans 23 launcher auto-detects HiDPI and set's `GDK_SCALE=2`. However, some jdk especially 21 and JBR distributions handle scaling naively. Setting `GDK_SCALE=2` in launch script results in 4x scaling.

### Language / Project Type / NetBeans Component

_No response_

### How to reproduce

Use temurin jdk 21 or Jetbrain JDK 21 and luanch netbeans 23. The netbeans UI on HiDPI screen with 2x scale looks like 4x scaled.

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

Apache NetBeans 22

### Operating System

Arch Linux

### JDK

21

### Apache NetBeans packaging

Apache NetBeans binary zip

### Anything else

_No response_

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

Yes

Start with the NetBeans launcher script and reproduce the issue on Arch Linux with a HiDPI display, JDK 21, and the binary ZIP. Compare Temurin and JetBrains JDK behavior around GDK_SCALE=2; done means NetBeans no longer renders at 4x scale while HiDPI scaling remains correct.

Written by the indexing model from the issue text.