Double key in Discord shortcuts

There is a weird effect that happens in Discord shortcuts when sending a key. (Seen on mac).
A simple `kbd.send(Keycode.R)` code will cause the shortcut to be recorded as "R + R". Pressing the key with the keyboard gets a normal "R". (With any key tested).
It might be an issue with discord, but the discrepancy between the keyboard and adafruit_hid makes me wonder what is different in CP to cause that. It might very well be a builtin usb_hid issue too.
- adafruit_hid

- keyboard

Start by reproducing the issue with adafruit_hid using kbd.send(Keycode.R) on macOS, then compare that path with the physical keyboard behavior. Trace the adafruit_hid and builtin usb_hid paths mentioned in the report; done means Discord records one R rather than "R + R" for every tested key.

Written by the indexing model from the issue text.