chore: Update electron to version 40

[Dadadah]

Electron v40 natively supports Wayland on linux.

This PR also updates the development flatpak build as electron 39 changed app indicators (tray icons) on flatpak builds. I use the development flatpak for testing, so I had to add some sockets to it to get things to work right.

Closes #191
Closes #182

[insertish]

Not sure if it's me but explodes on Nix:

✔ Running preMake hook
✔ Making distributables
  ✔ Making a zip distributable for linux/x64 [45s]
  ✔ Making a flatpak distributable for linux/x64 [3m58s]
  ✔ Making a deb distributable for linux/x64 [46s]
✔ Running postMake hook
  › Artifacts available at: /home/insert/Projects/stoat-desktop/out/make
insert@framework ~/P/stoat-desktop (chore/electron40)> pnpm install:flatpak

> stoat-desktop@1.3.0 install:flatpak /home/insert/Projects/stoat-desktop
> flatpak --user install out/make/flatpak/x86_64/chat.stoat.stoat-desktop_stable_x86_64.flatpak


chat.stoat.stoat-desktop permissions:
    ipc     network     fallback-x11     pulseaudio     wayland     x11    devices    dri    file access [1]    dbus access [2]

    [1] home, xdg-pictures:ro, xdg-run/pipewire-0, xdg-run/speech-dispatcher, xdg-videos:ro
    [2] com.canonical.AppMenu.Registrar, com.canonical.Unity, com.canonical.indicator.application, org.freedesktop.Notifications, org.freedesktop.ScreenSaver, org.kde.StatusNotifierWatcher


        ID                                  Branch            Op            Remote                         Download
 1. [✓] chat.stoat.stoat-desktop            stable            i             stoat-desktop-origin           0 bytes

Installation complete.
insert@framework ~/P/stoat-desktop (chore/electron40)> pnpm run:flatpak

> stoat-desktop@1.3.0 run:flatpak /home/insert/Projects/stoat-desktop
> flatpak run --socket=session-bus chat.stoat.stoat-desktop

[3:0406/173746.012381:ERROR:dbus/bus.cc:408] Failed to connect to the bus: Failed to connect to socket /run/dbus/system_bus_socket: No such file or directory
(node:3) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `stoat-desktop --trace-deprecation ...` to show where the warning was created)
[3:0406/173746.241512:ERROR:ui/ozone/platform/x11/ozone_platform_x11.cc:249] Missing X server or $DISPLAY
[3:0406/173746.241527:ERROR:ui/aura/env.cc:257] The platform failed to initialize.  Exiting.
/app/bin/electron-wrapper: line 3:     3 Segmentation fault         (core dumped) zypak-wrapper "stoat-desktop" "$@"
 ELIFECYCLE  Command failed with exit code 139.
insert@framework ~/P/stoat-desktop (chore/electron40) [SIGSEGV]> 

[Dadadah]

Odd, I'll see if I run into the same issue on X11.