Godot executable fails to be recognized on atomic distros (flatpak)

### Godot version

4.6.1-stable (Flatpak)

### VS Code version

Version: 1.107.18627 Commit: aafba0d66e7c8203c7e890a32383eecef870560c Date: 2025-12-25T12:20:53.256Z Electron: 39.2.7 ElectronBuildId: undefined Chromium: 142.0.7444.235 Node.js: 22.21.1 V8: 14.2.231.21-electron.0 OS: Linux x64 6.18.12-200.fc43.x86_64

### Godot Tools VS Code extension version

2.6.1

### System information

kinoite-main:latest

### Issue description

Functionality related to ``godotTools.editorPath.godot4`` and similar fails, as no executable is detected. When setting the executable path manually - in this case ``/var/lib/flatpak/exports/bin/org.godotengine.Godot`` for system and ``/home/greenstar/.local/share/flatpak/exports/bin/org.godotengine.Godot`` for user... it just fails to recognize it as such. System installation is A and user is B for further reference relative to this issue.

### Steps to reproduce

1. Use an atomic distro.
2. Install godot
3. Install vscode
4. Install this extension
5A. The specified Godot executable, '/var/lib/flatpak/exports/bin/org.godotengine.Godot' is invalid. Extension features will not work correctly unless this is fixed.
5B. The specified Godot executable, '/home/greenstar/.local/share/flatpak/exports/bin/org.godotengine.Godot' is invalid. Extension features will not work correctly unless this is fixed.

#### Yes I am aware that /home is actually just /var/home on atomic systems, trying /var/home still causes these exact same issues.