Fix a pair of think-os

Check `mappedKey` against `Key-1` / `Key_0`, because those are key objects.
`KEY_1` and `KEY_0` are entirely different things, and they only worked by pure
chance.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

src/Kaleidoscope/EEPROM-Keymap-Programmer.cpp

@@ -88,7 +88,7 @@ namespace KaleidoscopePlugins {
 
     // WAIT_FOR_CODE state
 
-    if (mappedKey < KEY_1 || mappedKey > KEY_0)
+    if (mappedKey < Key_1 || mappedKey > Key_0)
       return mappedKey;
 
     if (!key_toggled_on (keyState))