Links open in Edge instead of my default browser

### Apache NetBeans version

Apache NetBeans 19

### What happened

URLs open in Edge, not in my default browser (Vivaldi)

### How to reproduce

All URLs seem to be affected. The simplest way to reproduce is Help->Online Support

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

No / Don't know

### Operating System

Windows 10

### JDK

openjdk 19.0.2 2023-01-17 OpenJDK Runtime Environment (build 19.0.2+7-44) OpenJDK 64-Bit Server VM (build 19.0.2+7-44, mixed mode, sharing)

### Apache NetBeans packaging

Apache NetBeans provided installer

### Anything else

I realize this may be very difficult due to Microsoft's continuing attempts to ignore my wishes on browser usage. I will, however, note that Libre Office Writer opens its online help in my default browser.

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

No

Start by reproducing the issue from Help->Online Support on Windows 10, then trace the NetBeans URL-opening entry point to determine how the external browser is selected. Done means URLs open in the user's configured default browser, including Vivaldi, rather than Edge; verify the behavior for the reported Help link and other URLs.

Written by the indexing model from the issue text.