fix: add native libraries for Electron/BrowserView support

[jacopone]

Summary

Adds missing system libraries to extraPkgs in the AppImage wrapper to fix native module loading issues on NixOS.

Problem

Without these libraries, Cursor fails with multiple errors:

Error: Cannot find module './build/Debug/keymapping'
TypeError: Cannot read properties of null (reading 'getCurrentKeyboardLayout')
TypeError: Cannot read properties of null (reading 'onDidChangeKeyboardLayout')
[BrowserViewMainService] Cannot execute JavaScript: browser view not created for window 1

Solution

Add the following libraries to the FHS environment:

Category	Libraries
Keyboard/input	libxkbfile, libxkbcommon
Security/credentials	libsecret, nss, nspr
Graphics/GPU	libGL, libdrm, mesa
GTK/display	gtk3, glib, pango, cairo, gdk-pixbuf
Accessibility	at-spi2-atk, at-spi2-core
Wayland	wayland
System integration	libnotify, cups, libpulseaudio, systemd
X11	libX11, libXcomposite, libXdamage, libXext, libXfixes, libXrandr, libxcb

Testing

• Tested on NixOS with Cursor 2.2.43
• All native-keymap errors resolved
• Native modules load successfully: [CursorProclistService] Native module loaded successfully
• Cursor runs stable with no recurring errors

Before/After

Before (vanilla 2.2.43):

Error: Cannot find module './build/Debug/keymapping'
TypeError: Cannot read properties of null (reading 'getCurrentKeyboardLayout')

After (with this fix):

[CursorProclistService] Native module loaded successfully
update#setState idle

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