Select All keyboard shortcut not working on Mac

[nyanpasu64]

Aknowledgements

• I have checked that there's no other issue describing the same or
  similar problem that I currently have, regardless if it has been
  closed or open.

• I can confirm that this is not an issue with the Discord website,
  but it is a problem specific to the WebCord itself. I have tested
  if this bug occurs on Chromium/Chrome or any other Chromium-based
  browser that uses unpatched/upstream Chromium engine.

• I have tried running the build from the master branch and it does
  not have any fixes implemented according to my issue.

• My issue describes one of the unstable and/or not fully implemented
  features.

• I have found a workaround to mitigate or temporarily fix this issue
  in affected releases (please write it in Additional context section
  below).

Operating System / Platform

🍎️ MacOS

Operating system architecture

aarch64 (64-bit ARM)

Electron version

21.1.0

Application version

v3.8.8

Bug description

On macOS, pressing Cmd+A should select all (like in native macOS apps and web browsers), but does nothing.

Additional context

No response

[mmorella-dev]

This keybind being broken is a very big, very obnoxious usability problem for me. I fixed this in PR #373, but unfortunately Spacing has no plans for any more v4.x.x releases.

@nyanpasu64 If it helps, you can (for the time being) get a fixed build from the testing artifacts, or build yourself from my branch.

Regards, -mmd