bug#74975: Emacs app in MacOS, The keydown events for ESC are consumed by emacs and, IIUC, will not be sent to other app like Squirrel.

[Jones Stephen]

Hello:

I have encountered an issue with the Emacs app on macOS. Specifically, the `ESC` keydown events are consumed by Emacs and, as far as I understand, are not passed to other applications like Squirrel (a macOS input method). This behavior seems problematic in certain scenarios.

For reference, a related issue has been discussed here: [https://github.com/rime/squirrel/issues/625](https://github.com/rime/squirrel/issues/625).