[Keymap] `zweihander-macos`: Don’t pretend to be a mouse (#20997)

layouts/community/ergodox/zweihander-macos/rules.mk

@@ -1,3 +1,6 @@
 # Don’t do a tricolor flashing-light wave when the computer is shut down in Windows,
 # or when the machine is sleeping in macOS
 SLEEP_LED_ENABLE = no
+
+# Don’t pretend to be a mouse (if a a mouse is plugged into a FreeBSD machine, an annoying cursor will pop up)
+MOUSEKEY_ENABLE = no