Fix keycode mappings for via and ensure they don't change within protocol (#12130)

* Fix keycode mappings for via and ensure they don't change within protocol

* Update keycodes

* Fix broken keyboards

* added the missing keycodes found in via

* Remove invalid keycodes

Co-authored-by: David Hoelscher <infinityis@users.noreply.github.com>

quantum/quantum_keycodes.h

@@ -332,7 +332,11 @@ enum quantum_keycodes {
 
     MIDI_VELOCITY_MIN,
     MI_VEL_0 = MIDI_VELOCITY_MIN,
+#ifdef VIA_ENABLE
+    MI_VEL_1 = MIDI_VELOCITY_MIN,
+#else
     MI_VEL_1,
+#endif
     MI_VEL_2,
     MI_VEL_3,
     MI_VEL_4,