OverlayPanel: Dismissable prop is disregarded when panel is visible

Describe the bug

Changing dismissable prop after OverlayPanel is visible, doesn't alter the behaviour.

Reproducer

https://stackblitz.com/edit/vitejs-vite-atntbqzz?file=src%2FApp.tsx

System Information

System:
    OS: Windows 11 10.0.22631
    CPU: (16) x64 11th Gen Intel(R) Core(TM) i7-11850H @ 2.50GHz
    Memory: 14.70 GB / 31.67 GB
  Binaries:
    Node: 24.6.0 - C:\Program Files\nodejs\node.EXE
    Yarn: 4.9.2 - C:\Program Files\nodejs\yarn.CMD
    npm: 11.5.1 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Chrome: 144.0.7559.97
    Edge: Chromium (142.0.3595.90)
    Firefox: 138.0.1 - C:\Program Files\Mozilla Firefox\firefox.exe
    Internet Explorer: 11.0.22621.3527
  npmPackages:
    primereact: ^10.9.7 => 10.9.7
    react: ^19.2.3 => 19.2.3
    tailwindcss: ^4.1.18 => 4.1.18

Steps to reproduce the behavior

1. Click "Open overlay"
2. Click "Toggle dismissable" inside the overlay
3. See that the dismissable state is changed to false
4. Click outside the overlay
5. See that the overlay closes

Expected behavior

Would expect OverlayPanel to use the current state of dismissable, to decide if it should close. This would align with they way closeOnEscape reacts.

Start at the OverlayPanel component entry point and reproduce the behavior with the linked StackBlitz example. Trace how the dismissable prop is read while the panel is visible, then verify that an outside click respects its current value and that the reproducer no longer closes when dismissable is false.